List of chordate orders
Encyclopedia

Class Actinopterygii
Actinopterygii
The Actinopterygii or ray-finned fishes constitute a class or sub-class of the bony fishes.The ray-finned fishes are so called because they possess lepidotrichia or "fin rays", their fins being webs of skin supported by bony or horny spines , as opposed to the fleshy, lobed fins that characterize...

 (ray-finned fish)

  • Subclass Chondrostei
    Chondrostei
    Chondrostei are primarily cartilaginous fish showing some ossification. There are 52 species divided among two orders, the Acipenseriformes and the Polypteriformes ....

    • Polypteriformes, including the bichir
      Bichir
      The bichirs are a family, Polypteridae, of archaic-looking ray-finned fishes, the sole family in the order Polypteriformes.All species occur in freshwater habitats in tropical Africa and the Nile River system, mainly swampy, shallow floodplains and estuaries.-Anatomy and appearance:Bichirs are...

      s and reedfish
      Reedfish
      The Reedfish, Erpetoichthys calabaricus, Ropefish , or Snakefish is a species of freshwater fish in the bichir family and order. It is the only member of the genus Erpetoichthys...

      es
    • Acipenseriformes
      Acipenseriformes
      Acipenseriformes are an order of primitive ray-finned fishes that includes the sturgeons and paddlefishes, as well as some extinct families.Notable characteristics of Acipenseriformes include:* Cartilaginous endoskeleton* Lack of vertebral centrum...

      , including the sturgeon
      Sturgeon
      Sturgeon is the common name used for some 26 species of fish in the family Acipenseridae, including the genera Acipenser, Huso, Scaphirhynchus and Pseudoscaphirhynchus. The term includes over 20 species commonly referred to as sturgeon and several closely related species that have distinct common...

      s and paddlefish
      Paddlefish
      Paddlefish are primitive Chondrostean ray-finned fishes. The paddlefish can be distinguished by its large mouth and its elongated, spatula-like snout, called a rostrum, which is longer than the rest of the head...

      es
  • Subclass Neopterygii
    Neopterygii
    Neopterygii is a group of Actinopteri animals. Neopterygii means "new fins". There are only few changes during their evolution from the earlier actinopterygians. They appeared somewhere in the Late Permian, before the time of the dinosaurs. The Neopterygii is a very successful group of fishes,...

    • Infraclass Holostei
      Holostei
      Holostei are bony fish that show primitive characteristics. There are eight species divided among two orders, the Amiiformes represented by a single living species, the bowfin , and the Lepisosteiformes, the gars. There are more species to be found in the fossil record.Holostei share with other...

      • Lepisosteiformes, the gar
        Gar
        In American English the name gar is strictly applied to members of the Lepisosteidae, a family including seven living species of fish in two genera that inhabit fresh, brackish, and occasionally marine, waters of eastern North America, Central America, and the Caribbean islands.-Etymology:In...

        s
      • Amiiformes
        Amiiformes
        Amiiformes is an order of fish, of which only one species, the Bowfin, Amia calva, is still extant.-Taxonomy:Amiiformes Hay 1929*Superfamily Amioidea Bonaparte 1838**Family Amiidae Bonaparte 1837***Subfamily Amiinae Bonaparte 1837...

        , the bowfin
        Bowfin
        The Bowfin, Amia calva, is the last surviving member of the order Amiiformes , and of the family Amiidae...

        s
    • Infraclass Teleostei
      Teleostei
      Teleostei is one of three infraclasses in class Actinopterygii, the ray-finned fishes. This diverse group, which arose in the Triassic period, includes 20,000 extant species in about 40 orders; most living fishes are members of this group...

      • Superorder Osteoglossomorpha
        Osteoglossomorpha
        Osteoglossomorpha is a group of bony fish in the Teleostei.-Notable members:A notable member is the Arapaima , the largest freshwater fish in South America and one of the very largest bony fishes alive. Other notable members include the bizarre freshwater elephantfishes .-Systematics:Most...

        • Osteoglossiformes
          Osteoglossiformes
          Osteoglossiformes is a relatively primitive order of ray-finned fish that contains two sub-orders, the Osteoglossoidei and the Notopteroidei. All of the living species inhabit freshwater...

          , the bony-tongued fishes
        • Hiodontiformes
          Hiodontiformes
          Hiodontiformes is a relatively new order of fish, consisting of the two living species of the mooneye family Hiodontidae and three genera of extinct types....

          , including the mooneye
          Mooneye
          The mooneyes are a family, the Hiodontidae, of primitive ray-finned fish comprising two living and three extinct species in the genus Hiodon. They are large-eyed, fork-tailed fish that physically resemble shads. Their common name comes from the metallic gold or silver shine of their eyes.The higher...

           and goldeye
          Goldeye
          The goldeye, Hiodon alosoides, is a species of fish in the mooneye family . It occurs from as far down the Mackenzie River as Aklavik in the north to Mississippi in the south, and from Alberta in the west to Ohio south of the Great Lakes, with an isolated population south of James Bay. It is...

      • Superorder Elopomorpha
        Elopomorpha
        The superorder Elopomorpha contains a variety of types of fishes that range from typical silvery colored fish-like species such as the tarpons and ladyfishes of the Elopiformes and the bonefishes of the Albuliformes, to the long and slender, smooth bodied eels of the Anguilliformes...

        • Elopiformes
          Elopiformes
          Elopiformes is the order of ray-finned fish that includes the tarpons, tenpounders, and ladyfish, as well as a number of extinct types. They have a long fossil record, easily distinguished from other fishes by the presence of an additional set of bones in the throat.They are related to the order...

          , including the ladyfishes and tarpon
          Tarpon
          Tarpons are large fish of the genus Megalops. There are two species of Megalops, one native to the Atlantic, and the other to the Indo-Pacific oceans.They are the only members of the family Megalopidae.- Species and habitats :...

        • Albuliformes
          Bonefish
          The bonefish is the type species of the Albulidae family, or bonefishes in order Albuliformes. It is amphidromous, living in inshore tropical waters, moving onto shallow mudflats to feed with the incoming tide, and retreating to deeper water as the tide ebbs...

          , the bonefishes
        • Notacanthiformes
          Notacanthiformes
          Notacanthiformes is an order of deep-sea ray-finned fishes, consisting of the families Halosauridae and Notacanthidae The order is of relatively recent vintage; Fishes of the World lists it as a suborder Notacanthoidei of Albuliformes...

          , including the halosaurs and spiny eel
          Spiny eel
          The name spiny eel is used to describe members of two different families of fish: the freshwater Mastacembelidae of Asia and Africa, and the marine Notacanthidae. Both are so-named because of their eel-like shape and sturdy fin spines....

          s
        • Anguilliformes, the true eel
          Eel
          Eels are an order of fish, which consists of four suborders, 20 families, 111 genera and approximately 800 species. Most eels are predators...

          s and gulpers
        • Saccopharyngiformes
          Saccopharyngiformes
          Saccopharyngiformes is an order of unusual ray-finned fish superficially similar to eels, but with many internal differences. Most of the fish in this order are deep-sea types known from only a handful of specimens such as the Umbrella Mouth Gulper Eel. Saccopharyngiformes are also bioluminescent...

          , including the gulper eel
      • Superorder Clupeomorpha
        • Clupeiformes
          Clupeiformes
          Clupeiformes is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae. The group includes many of the most important food fish....

          , including herring
          Herring
          Herring is an oily fish of the genus Clupea, found in the shallow, temperate waters of the North Pacific and the North Atlantic oceans, including the Baltic Sea. Three species of Clupea are recognized. The main taxa, the Atlantic herring and the Pacific herring may each be divided into subspecies...

          s and anchovies
          Anchovy
          Anchovies are a family of small, common salt-water forage fish. There are 144 species in 17 genera, found in the Atlantic, Indian, and Pacific Oceans. Anchovies are usually classified as an oily fish.-Description:...

      • Superorder Ostariophysi
        Ostariophysi
        Ostariophysi is the second-largest superorder of fish. Members of this superorder are called ostariophysians. This diverse group contains almost 8,000 species, about 28% of known fish species in the world and 68% of freshwater species, and are present on all major continents except Antarctica...

        • Gonorynchiformes
          Gonorynchiformes
          Gonorynchiformes is an order of ray-finned fish that includes the important food source, the milkfish , and a number of lesser-known types, both marine and freshwater....

          , including the milkfish
          Milkfish
          The milkfish is the sole living species in the family Chanidae. - Description and biology :...

          es
        • Cypriniformes
          Cypriniformes
          The Cypriniformes are an order of ray-finned fish, including the carps, minnows, loaches and relatives. This order contains 5-6 families, over 320 genera, and more than 3,250 species, with new species being described every few months or so, and new genera being recognized regularly...

          , including barbs, carp
          Carp
          Carp are various species of oily freshwater fish of the family Cyprinidae, a very large group of fish native to Europe and Asia. The cypriniformes are traditionally grouped with the Characiformes, Siluriformes and Gymnotiformes to create the superorder Ostariophysi, since these groups have certain...

          , danios, goldfish
          Goldfish
          The goldfish is a freshwater fish in the family Cyprinidae of order Cypriniformes. It was one of the earliest fish to be domesticated, and is one of the most commonly kept aquarium fish....

          es, loaches
          Loach (fish)
          Cobitidae is the family of the true loaches, which are Old World freshwater fish. They occur throughout Eurasia and in Morocco, and inhabit riverine ecosystems. Today, most "loaches" are placed in other families...

          , minnow
          Minnow
          Minnow is a general term used to refer to small freshwater and saltwater fish, especially those used as bait fish or for fishing bait. More specifically, it refers to small freshwater fish of the carp family.-True minnows:...

          s, rasbora
          Rasbora
          A rasbora is a member of a group of small minnow-type fish in the family Cyprinidae . Fish from genera such as Boraras, Microrasbora, Rasbora and Trigonostigma are commonly referred to as rasboras...

          s
        • Characiformes
          Characiformes
          The Characiformes are an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, there are a few thousand different species, including the well-known piranha and tetras.-Taxonomy:...

          , including characins, pencilfishes, hatchetfish
          Hatchetfish
          The name hatchetfish may refer to two unrelated groups of fishes:*Marine hatchetfishes, small deep-sea bioluminescent fishes of the family Sternoptychidae, subfamily Sternoptychinae....

          es, piranha
          Piranha
          A piranha or piraña is a member of family Characidae in order Characiformes, an omnivorous freshwater fish that inhabits South American rivers. In Venezuela, they are called caribes...

          s, tetra
          Tetra
          thumb|right|250px|Pristella tetra — [[Pristella maxillaris]].thumb|right|250px|Golden Pristella tetra, a [[morph |morph]] of [[Pristella maxillaris]].thumb|right|250px|[[Silvertip tetra]] — Hasemania nana....

          s.
        • Gymnotiformes
          Gymnotiformes
          The Gymnotiformes are a group of teleost bony fishes commonly known as the Neotropical or South American knifefishes. They have long bodies and swim using undulations of their elongated anal fin...

          , including electric eel
          Electric eel
          The electric eel , is an electric fish, and the only species of the genus Electrophorus. It is capable of generating powerful electric shocks, of up to six hundred volts, which it uses for both hunting and self-defense. It is an apex predator in its South American range...

          s and knifefish
          Knifefish
          Knifefish may refer to several knife-shaped fishes:* The Neotropical or weakly electric knifefishes, order Gymnotiformes, containing five families:** Family Gymnotidae ** Family Rhamphichthyidae...

          es
        • Siluriformes, the catfish
          Catfish
          Catfishes are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the heaviest and longest, the Mekong giant catfish from Southeast Asia and the second longest, the wels catfish of Eurasia, to detritivores...

          es
      • Superorder Protacanthopterygii
        Protacanthopterygii
        Protacanthopterygii is a ray-finned fish taxon ranked as a superorder of the infraclass Teleostei. They inhabit both marine and freshwater habitat...

        • Order Salmoniformes, including salmon
          Salmon
          Salmon is the common name for several species of fish in the family Salmonidae. Several other fish in the same family are called trout; the difference is often said to be that salmon migrate and trout are resident, but this distinction does not strictly hold true...

           and trout
          Trout
          Trout is the name for a number of species of freshwater and saltwater fish belonging to the Salmoninae subfamily of the family Salmonidae. Salmon belong to the same family as trout. Most salmon species spend almost all their lives in salt water...

        • Esociformes
          Esociformes
          Esociformes is a small order of ray-finned fish, with two families, the Umbridae and the Esocidae . The pikes of genus Esox give the order its name. There are ten species — five in each family....

           the pike
          Esox
          Esox is a genus of freshwater fish, the only living genus in the family Esocidae — the esocids which were endemic to North America, Europe and Eurasia during the Paleogene through present.The type species is E. lucius, the northern pike...

        • Osmeriformes
          Osmeriformes
          Osmeriformes is an order of ray-finned fish that includes the true or freshwater smelts and allies, such as the galaxiids and noodlefishes; they are also collectively called osmeriforms. They belong to the teleost superorder Protacanthopterygii, which also includes pike and salmon, among others...

          , including the smelts and galaxiid
          Galaxiid
          The Galaxiidae, also known by the anglicised name as galaxiids, are a family of mostly small freshwater fish in the southern hemisphere. The majority of species live in Australia or New Zealand, some are also found in South Africa, South America, Lord Howe Island, New Caledonia and the Falkland...

          s
      • Superorder Stenopterygii
        Stenopterygii
        Stenopterygii are a superorder of ray-finned fish in the infraclass Teleostei. Their validity is somewhat doubtful, as the group was established to separate, out of a large group of closely related Teleostei, a mere two rather peculiarly autapomorphic orders at best...

        • Ateleopodiformes, the jellynose fish
          Jellynose fish
          The jellynose fishes or tadpole fishes are the small order Ateleopodiformes. This group of ray-finned fish is monotypic, containing a single family Ateleopodidae...

        • Stomiiformes
          Stomiiformes
          Stomiiformes is an order of deep-sea ray-finned fishes of very diverse morphology. It includes for example dragonfishes, lightfishes, loosejaws, marine hatchetfishes and viperfishes. The order contains 4 families with more than 50 genera and almost 400 species...

          , including the bristlemouths and marine hatchetfish
          Marine hatchetfish
          Marine hatchetfishes or deep-sea hatchetfishes are small deep-sea mesopelagic ray-finned fish of the stomiiform subfamily Sternoptychinae...

          es
      • Superorder Cyclosquamata
        • Aulopiformes
          Aulopiformes
          Aulopiformes is an order of marine ray-finned fish consisting of some 15 extant and several prehistoric families with about 45 genera and over 230 species. The common names grinners, lizardfishes and allies or aulopiforms are sometimes used for this group...

          , including the Bombay duck
          Bombay duck
          The Bombay duck or bummalo is, despite its name, not a duck but a lizardfish. It is native to the waters between Mumbai and Kutch in the Arabian Sea, and a small number are also found in the Bay of Bengal. Great numbers are also caught in the South China Sea...

           and lancetfish
          Lancetfish
          Lancetfishes are large oceanic predatory fishes in the genus Alepisaurus , the only living genus in the family Alepisauridae....

          es
      • Superorder Scopelomorpha
        • Myctophiformes
          Myctophiformes
          Myctophiformes is an order of ray-finned fish consisting of two families of deep-sea marine fish, most notably the highly abundant lanternfishes...

          , including the lanternfish
          Lanternfish
          Cooper Lanternfishes are small mesopelagic fish of the large family Myctophidae. One of two families in the order Myctophiformes, the Myctophidae are represented by 246 species in 33 genera, and are found in oceans worldwide. They are aptly named after their conspicuous use of bioluminescence...

          es
      • Superorder Lampridiomorpha
        • Lampriformes
          Lampriformes
          Lampriformes is an order of ray-finned fish. They are collectively called "lamprids" or lampriforms, and unite such open-ocean and partially deep-sea Teleostei as the crestfishes, oarfish, opahs and ribbonfishes...

          , including the oarfish
          Oarfish
          Oarfish are large, greatly elongated, pelagic Lampriform fishes comprising the small family Regalecidae. Found in all temperate to tropical oceans yet rarely seen, the oarfish family contains four species in two genera...

          , opah
          Opah
          Opah are large, colorful, deep-bodied pelagic Lampriform fish comprising the small family Lampridae . There are only two living species in a single genus: Lampris...

           and ribbonfishes
      • Superorder Polymyxiomorpha
        • Polymixiiformes, the beardfish
          Beardfish
          The beardfishes are a small family of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They have little economic importance....

          es
      • Superorder Paracanthopterygii
        Paracanthopterygii
        Paracanthopterygii is a superorder of fishes. Members of this superorder are called paracanthopterygians.It includes five orders:* Percopsiformes * Batrachoidiformes * Lophiiformes...

        • Percopsiformes
          Percopsiformes
          Percopsiformes is a small order of ray-finned fish, comprising the trout-perch and its allies. It contains just nine species, grouped into three families....

          , including the cavefishes and trout-perches
        • Batrachoidiformes, the toadfishes
        • Lophiiformes, including the anglerfish
          Anglerfish
          Anglerfishes are members of the teleost order Lophiiformes . They are bony fishes named for their characteristic mode of predation, wherein a fleshy growth from the fish's head acts as a lure; this is considered analogous to angling.Some anglerfishes are pelagic , while others are benthic...

          es
        • Gadiformes
          Gadiformes
          Gadiformes is an order of ray-finned fish, also called the Anacanthini, that includes the cod and its allies. Many major food fish are in this order. They are found in marine waters throughout the world, and there are also a small number of freshwater species.Common characteristics include the...

          , including cod
          Cod
          Cod is the common name for genus Gadus, belonging to the family Gadidae, and is also used in the common name for various other fishes. Cod is a popular food with a mild flavor, low fat content and a dense, flaky white flesh. Cod livers are processed to make cod liver oil, an important source of...

          s
        • Ophidiiformes
          Ophidiiformes
          Ophidiiformes is an order of ray-finned fish that includes the cusk eels , pearlfishes , brotulas , and others....

          , including the pearlfish
          Pearlfish
          Pearlfish is a general name for a variety of marine fish species in the Carapidae family. Pearlfish have been found in tropical waters of the Atlantic, Indian, and Pacific Oceans at depths up to along oceanic shelves and slopes....

          es
      • Superorder Acanthopterygii
        Acanthopterygii
        Acanthopterygii is a superorder of bony fishes in the class Actinopterygii. Members of this superorder are also known as the ray-finned fishes for the characteristic sharp, bony rays in their fins; however this name is also often given to the class Actinopterygii as a whole.Orders:* Order...

        • Mugiliformes, the mullets
          Mullet (fish)
          The mullets or grey mullets are a family and order of ray-finned fish found worldwide in coastal temperate and tropical waters, and in some species in fresh water. Mullets have served as an important source of food in Mediterranean Europe since Roman times...

        • Atheriniformes
          Atheriniformes
          Atheriniformes, also known as the silversides, is an order of ray-finned fish that includes the Old World silversides and several less-familiar families, including the unusual Phallostethidae...

          , including silversides
          Silverside (fish)
          The Old World silversides are a family, Atherinidae, of fish in the order Atheriniformes. They occur worldwide in tropical and temperate waters...

           and rainbowfish
          Rainbowfish
          The rainbowfish are a family of small, colourful, freshwater fish that are found in northern and eastern Australia and New Guinea and in the Southeast Asian islands....

          es
        • Beloniformes
          Beloniformes
          The Beloniformes are an order of five families of freshwater and marine ray-finned fish: the Adrianichthyidae ; Belonidae ; Exocoetidae ; Hemiramphidae ; and the Scomberesocidae...

          , including the flyingfish
          Flyingfish
          Exocoetidae, is a family of marine fish in the order Beloniformes of class Actinopterygii. Fish of this family are known as flying fish. There are about 64 species grouped in seven to nine genera.- Etymology :...

          es
        • Cetomimiformes
          Cetomimiformes
          The Cetomimiformes or whalefishes are an order of small, deep-sea ray-finned fish. Some authorities include the whalefishes as part of the order Stephanoberyciformes, within the superfamily Cetomimoidea. Their sister order, the Beryciformes, includes the flashlight fish and squirrelfish.Within this...

          , the whalefishes
        • Cyprinodontiformes
          Cyprinodontiformes
          The Cyprinodontiformes is an order of ray-finned fish, comprising mostly small, fresh-water fish. Many popular aquarium fish, such as killifish and live-bearers, are included. They are closely related to the Atheriniformes and are occasionally included with them...

          , including livebearers
          Live-bearing aquarium fish
          Live-bearing aquarium fish, often simply called livebearers, are fish that retain the eggs inside the body and give birth to live, free-swimming young.-Common aquarium livebearers:...

          , killifish
          Killifish
          A killifish is any of various oviparous cyprinodontiform fish . Altogether, there are some 1270 different species of killifish, the biggest family being Rivulidae, containing more than 320 species...

          es
        • Stephanoberyciformes
          Stephanoberyciformes
          The Stephanoberyciformes are an order of marine ray-finned fishes, consisting of about 45 species, the majority of which belong to the ridgehead family . The Stephanoberyciformes are mostly uncommon deep-sea species with little, if any, importance to commercial fishery...

          , including the ridgehead
          Ridgehead
          Ridgeheads, also known as bigscales, are a family of small, deep-sea stephanoberyciform fish. The family contains approximately 37 species in five genera; their distribution is worldwide, but ridgeheads are absent from the Arctic Ocean and Mediterranean Sea...

          s
        • Beryciformes
          Beryciformes
          Beryciformes is an order of ray-finned fishes. This is a very poorly understood group of 16 families, 57 genera, and about 219 species. Some people believe that it is probably an artificial assemblage of unrelated taxa that are thrown together for convenience only; there are no convincing...

          , including the fangtooth
          Fangtooth
          Fangtooths are beryciform fish of the family Anoplogastridae that live in the deep sea. The name is from Greek anoplo meaning "unarmed" and gaster meaning "stomach"...

          s and pineconefishes
        • Zeiformes
          Zeiformes
          The Zeiformes are a small order of marine ray-finned fishes most notable for the dories, a group of common food fish. The order consists of about 40 species in seven families, mostly deep-sea types....

          , including the dories
          Dory (fish)
          The common name dory is shared by members of several different families of large-eyed, silvery, deep-bodied, laterally compressed, and roughly discoid marine fish. As well as resembling each other, dories are also similar in habit: most are deep-sea and demersal...

        • Gobiesociformes, the clingfishes
        • Gasterosteiformes
          Gasterosteiformes
          Gasterosteiformes is an order of ray-finned fishes that includes the sticklebacks and relatives.In the Gasterosteiformes, the pelvic girdle is never attached to the cleithra directly, and the supramaxillary, orbitosphenoid, and basisphenoid bones are absent. The body is often partly or completely...

           including stickleback
          Stickleback
          The Gasterosteidae are a family of fish including the sticklebacks. FishBase currently recognises sixteen species in the family, grouped in five genera. However several of the species have a number of recognised subspecies, and the taxonomy of the family is thought to be in need of revision...

          s, pipefish
          Pipefish
          Pipefishes or pipe-fishes are a subfamily of small fishes, which, together with the seahorses, form the family Syngnathidae.-Anatomy:...

          es, seahorses
        • Syngnathiformes
          Syngnathiformes
          Syngnathiformes is an order of ray-finned fishes that includes the pipefishes and seahorses.These fishes have elongate, narrow, bodies surrounded by a series of bony rings, and small, tubular mouths. Several groups live among seaweed and swim with the body aligned vertically, to blend in with the...

          , including the seahorses and pipefish
          Pipefish
          Pipefishes or pipe-fishes are a subfamily of small fishes, which, together with the seahorses, form the family Syngnathidae.-Anatomy:...

          es
        • Synbranchiformes
          Synbranchiformes
          Synbranchiformes, often called swamp eels, is an order of ray-finned fishes that are eel-like but have spiny rays, indicating that they belong to the superorder Acanthopterygii.-Taxonomy:...

          , including the swamp eel
          Swamp eel
          The swamp eels are a family of freshwater eel-like fishes of the worldwide tropics.-Description:...

          s
        • Tetraodontiformes
          Tetraodontiformes
          The Tetraodontiformes are an order of highly derived ray-finned fish, also called the Plectognathi. Sometimes these are classified as a suborder of the Perciformes...

          , including the filefish
          Filefish
          Filefish are tropical to subtropical tetraodontiform marine fish of the diverse family Monacanthidae. Found in the Atlantic, Pacific and Indian Oceans, the filefish family contains approximately 107 species in 26 genera...

          es and pufferfish
          Pufferfish
          Tetraodontidae is a family of primarily marine and estuarine fish of the Tetraodontiformes order. The family includes many familiar species which are variously called pufferfish, balloonfish, blowfish, bubblefish, globefish, swellfish, toadfish, toadies, honey toads, sugar toads, and sea squab...

        • Pleuronectiformes, the flatfish
          Flatfish
          The flatfish are an order of ray-finned fish, also called the Heterosomata, sometimes classified as a suborder of Perciformes. In many species, both eyes lie on one side of the head, one or the other migrating through and around the head during development...

          es
        • Scorpaeniformes
          Scorpaeniformes
          Scorpaeniformes is an order of ray-finned fish, but it has also been called the Scleroparei.They are known as "mail-cheeked" fishes due to their distinguishing characteristic, the suborbital stay: a backwards extension of the third circumorbital bone across the cheek to the preoperculum, to which...

          , including scorpionfish
          Scorpionfish
          Scorpaenidae, the scorpionfish, are a family of mostly marine fish that includes many of the world's most venomous species. As the name suggests, scorpionfish have a type of "sting" in the form of sharp spines coated with venomous mucus. The family is a large one, with hundreds of members. They are...

          es and the sculpin
          Sculpin
          A Sculpin is a fish that belongs to the order Scorpaeniformes, suborder Cottoidei and superfamily Cottoidea, that contains 11 families, 149 genera, and 756 species...

          s
        • Perciformes
          Perciformes
          The Perciformes, also called the Percomorphi or Acanthopteri, is one of the largest orders of vertebrates, containing about 40% of all bony fish. Perciformes means perch-like. They belong to the class of ray-finned fish and comprise over 7,000 species found in almost all aquatic environments...

           40% of all fish including anabantids, Centrarchids
          Centrarchidae
          The sunfishes are a family of freshwater ray-finned fish belonging to the order Perciformes. The type genus is Centrarchus . The family's 27 species includes many fishes familiar to North Americans, including the rock bass, largemouth bass, bluegill, pumpkinseed, and crappies...

           (incl. bass
          Bass (fish)
          Bass is a name shared by many different species of popular gamefish. The term encompasses both freshwater and marine species. All belong to the large order Perciformes, or perch-like fishes, and in fact the word bass comes from Middle English bars, meaning "perch."-Types of basses:*The temperate...

           and sunfish), Cichlid
          Cichlid
          Cichlids are fishes from the family Cichlidae in the order Perciformes. Cichlids are members of a group known as the Labroidei along with the wrasses , damselfish , and surfperches . This family is both large and diverse. At least 1,300 species have been scientifically described, making it one of...

          s, gobies, gourami
          Gourami
          Gouramis are a family, Osphronemidae, of freshwater perciform fishes. The fish are native to Asia, from Pakistan and India to the Malay Archipelago and north-easterly towards Korea. The name "gourami" is also used for fish of the families Helostomatidae and Anabantidae. "Gouramis" is an example of...

          s, mackerel
          Mackerel
          Mackerel is a common name applied to a number of different species of fish, mostly, but not exclusively, from the family Scombridae. They may be found in all tropical and temperate seas. Most live offshore in the oceanic environment but a few, like the Spanish mackerel , enter bays and can be...

          , perch
          Perch
          Perch is a common name for fish of the genus Perca, freshwater gamefish belonging to the family Percidae. The perch, of which there are three species in different geographical areas, lend their name to a large order of vertebrates: the Perciformes, from the Greek perke meaning spotted, and the...

          es, scats
          Scatophagidae
          The scats are a small family, Scatophagidae, of fishes in the order Perciformes.They are small fish native to the Indian and western Pacific Ocean that have been popular in the aquarium trade in the last 30 years...

          , whiting, wrasses

Class Amphibia (amphibians)

  • Urodela or Caudata (salamanders)
  • Anura (frogs and toads)
  • Gymnophiona or Apoda (caecilians)

Class Ascidiacea
Ascidiacea
Ascidiacea is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of the polysaccharide tunicin, as compared to other tunicates which are less rigid.Ascidians are found all over the world, usually in shallow...

 (ascideans and sessile tunicates)

  • Enterogona
    Enterogona
    Enterogona is an order of tunicates in the class Ascidiacea. It describes a group of marine animals....

  • Pleurogona
    Pleurogona
    Pleurogona is an order of tunicates. One of the more invasive species of this order is the "stalked sea squirt" Styela clava . Another invasive genus include the "chain sea squirts or chain tunicates" of the genus Botrylloides  and the "golden star tunicate" Botryllus schlosseri ....

  • Aspiraculata
    Aspiraculata
    Aspiraculata is an order of sea squirts in the class Sorberacea. It is the only order in the class, and includes only one family, the Hexacrobylidae....


Class Aves (birds)

  • Superorder Palaeognathae
    • Struthioniformes, Ostrich, emus, kiwis, and allies
    • Tinamiformes, tinamous
  • Infraclass Neognathae
    Neognathae
    Neognaths are birds within the subclass Neornithes of the class Aves. The Neognathae include virtually all living birds; their sister taxon Palaeognathae contains the tinamous and the flightless ratites....

    • Superorder Galloanserae (fowl)
      • Anseriformes
        Anseriformes
        The order Anseriformes contains about 150 living species of birds in three extant families: the Anhimidae , Anseranatidae , and the Anatidae, which includes over 140 species of waterfowl, among them the ducks, geese, and swans.All species in the order are highly adapted for an aquatic existence at...

        , waterfowl
      • Galliformes
        Galliformes
        Galliformes are an order of heavy-bodied ground-feeding domestic or game bird, containing turkey, grouse, chicken, New and Old World Quail, ptarmigan, partridge, pheasant, and the Cracidae. Common names are gamefowl or gamebirds, landfowl, gallinaceous birds or galliforms...

        , fowl
    • Superorder Neoaves
      • Sphenisciformes, penguins
      • Gaviiformes
        Gaviiformes
        Gaviiformes is an order of aquatic birds containing the loons or divers and their closest extinct relatives. Modern gaviiformes are found in many parts of North America and northern Eurasia , though prehistoric species were more widespread.-Classification and evolution:There are five living...

        , loons
      • Podicipediformes, grebes
      • Procellariiformes
        Procellariiformes
        Procellariiformes is an order of seabirds that comprises four families: the albatrosses, petrels and shearwaters, storm petrels, and diving petrels...

        , albatrosses, petrels, and allies
      • Pelecaniformes
        Pelecaniformes
        The Pelecaniformes is a order of medium-sized and large waterbirds found worldwide. As traditionally—but erroneously—defined, they encompass all birds that have feet with all four toes webbed. Hence, they were formerly also known by such names as totipalmates or steganopodes...

        , pelicans and allies
      • Ciconiiformes
        Ciconiiformes
        Traditionally, the order Ciconiiformes has included a variety of large, long-legged wading birds with large bills: storks, herons, egrets, ibises, spoonbills, and several others. Ciconiiformes are known from the Late Eocene...

        , storks and allies
      • Phoenicopteriformes, flamingos
      • Accipitriformes
        Accipitriformes
        The Accipitriformes is an order that has been proposed to include most of the diurnal birds of prey: hawks, eagles, vultures, and many others, about 225 species in all. For a long time, the majority view has been to include them with the falcons in the Falconiformes, but some authorities have...

        , eagles, hawks and allies (taxonomists have traditionally placed these groups in the Falconiformes)
      • Falconiformes
        Falconiformes
        The order Falconiformes is a group of about 290 species of birds that comprises the diurnal birds of prey. Raptor classification is difficult and the order is treated in several ways.- Classification problems :...

        , falcons
      • Turniciformes, button-quail
      • Opisthocomiformes, Hoatzin (this enigmatic bird was traditionally treated as a family within either the Galliformes or Cuculiformes)
      • Gruiformes
        Gruiformes
        The Gruiformes are an order containing a considerable number of living and extinct bird families, with a widespread geographical diversity. Gruiform means "crane-like"....

        , cranes and allies
      • Charadriiformes
        Charadriiformes
        Charadriiformes is a diverse order of small to medium-large birds. It includes about 350 species and has members in all parts of the world. Most Charadriiformes live near water and eat invertebrates or other small animals; however, some are pelagic , some occupy deserts and a few are found in thick...

        , plovers and allies
      • Pterocliformes, sandgrouse (this enigmatic group was traditionally treated as a family in any of three different orders: Charadriiformes, Ciconiiformes, and Columbiformes)
      • Columbiformes
        Columbiformes
        Columbiformes are an avian order that includes the very widespread and successful doves and pigeons, classified in the family Columbidae, and the extinct Dodo and the Rodrigues Solitaire, long classified as a second family Raphidae. 313 species, found worldwide, comprise the Columbiformes order....

        , doves and pigeons
      • Psittaciformes, parrots and allies
      • Cuculiformes
        Cuculiformes
        The near passerine bird order Cuculiformes traditionally included three families as below:* Musophagidae - turacos and allies* Cuculidae - cuckoos, coucals, roadrunners and anis* Opisthocomidae - Hoatzin...

        , cuckoos
      • Strigiformes, owls
      • Caprimulgiformes
        Caprimulgiformes
        The Caprimulgiformes is an order of birds that includes a number of birds with global distribution . They are generally insectivorous and nocturnal...

        , nightjars and allies
      • Apodiformes
        Apodiformes
        Traditionally, the bird order Apodiformes contained three living families: the swifts , the tree swifts , and the hummingbirds . In the Sibley-Ahlquist taxonomy, this order is raised to a superorder Apodimorphae in which hummingbirds are separated as a new order, Trochiliformes...

        , swifts
      • Coliiformes, mousebirds
      • Trogoniformes, trogons
      • Coraciiformes
        Coraciiformes
        The Coraciiformes are a group of usually colorful near passerine birds including the kingfishers, the Hoopoe, the bee-eaters, the rollers, and the hornbills...

        , kingfishers
      • Galbuliformes, jacamars and puffbirds (these groups were traditionally treated as families in the order Piciformes)
      • Piciformes
        Piciformes
        Nine families of largely arboreal birds make up the order Piciformes, the best-known of them being the Picidae, which includes the woodpeckers and close relatives...

        , woodpeckers and allies
      • Passeriformes
        Passerine
        A passerine is a bird of the order Passeriformes, which includes more than half of all bird species. Sometimes known as perching birds or, less accurately, as songbirds, the passerines form one of the most diverse terrestrial vertebrate orders: with over 5,000 identified species, it has roughly...

        , passerines

Class Chondrichthyes
Chondrichthyes
Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, two-chambered hearts, and skeletons made of cartilage rather than bone...

 (cartilaginous fish)

  • Subclass Elasmobranchii
    Elasmobranchii
    Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish, that includes the sharks and the rays and skates .-Evolution:...

    • Superorder Batoidea
      Batoidea
      Batoidea is a superorder of cartilaginous fish commonly known as rays and skates, containing more than 500 described species in thirteen families...

      • Rajiformes
        Rajiformes
        Rajiformes is one of the four orders of batoids, flattened cartilaginous fishes related to sharks.Rajiforms are distinguished by the presence of greatly enlarged pectoral fins, which reach as far forward as the sides of the head, with a generally flattened body. The undulatory pectoral fin motion...

        : rays and skates
      • Pristiformes: sawfishes
      • Torpediniformes: electric rays
    • Superorder Selachimorpha (sharks)
      • Heterodontiformes: bullhead sharks
      • Orectolobiformes: carpet sharks
      • Carcharhiniformes
        Carcharhiniformes
        The ground sharks, order Carcharhiniformes, are the largest order of sharks. With over 270 species, carcharhiniforms include a number of common types, such as the blue shark, catsharks, swellsharks, and sandbar shark....

        : ground sharks
      • Lamniformes
        Lamniformes
        Lamniformes is an order of sharks commonly known as mackerel sharks . It includes some of the most familiar species of sharks, such as the great white shark, as well as more unusual representatives, such as the goblin shark and the megamouth shark.Members of the order are distinguished by...

        : mackerel sharks
      • Hexanchiformes
        Hexanchiformes
        Hexanchiformes is the order consisting of the most primitive types of sharks, and numbering just five extant species. Fossil sharks that were apparently very similar to modern sevengill species are known from Jurassic specimens....

        : frilled and cow sharks
      • Squaliformes
        Squaliformes
        Squaliformes is an order of sharks that includes about 97 species in seven families.Members of the order have two dorsal fins, which usually possess spines, no anal fin or nictitating membrane, and five gill slits. In most other respects, however, they are quite variable in form and size...

        : dogfish sharks
      • Squatiniformes: angel sharks
      • Pristiophoriformes: saw sharks
  • Subclass Holocephali
    Holocephali
    The subclass Holocephali is a taxon of cartilaginous fish, of which the order Chimaeriformes is the only surviving group.Holocephali has an extensive fossil record that starts during the Devonian period. However, most fossils are teeth, and the body forms of numerous species are not known, or, at...

    • Chimaeriformes: chimaeras

Class Mammal
Mammal
Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...

ia (mammals)

  • Subclass Prototheria
    Prototheria
    Prototheria is a taxonomic group, or taxon, to which the order Monotremata belongs. It is conventionally ranked as a subclass within the mammals.Most of the animals in this group are extinct...

    • Monotremata: monotremes
  • Subclass Theria
    Theria
    Theria is a subclass of mammals that give birth to live young without using a shelled egg, including both eutherians and metatherians . The only omitted extant mammal group is the egg-laying monotremes....

    • Infraclass Marsupial
      Marsupial
      Marsupials are an infraclass of mammals, characterized by giving birth to relatively undeveloped young. Close to 70% of the 334 extant species occur in Australia, New Guinea, and nearby islands, with the remaining 100 found in the Americas, primarily in South America, but with thirteen in Central...

      ia
      • Didelphimorphia
        Didelphimorphia
        Opossums make up the largest order of marsupials in the Western Hemisphere, including 103 or more species in 19 genera. They are also commonly called possums, though that term technically refers to Australian fauna of the suborder Phalangeriformes. The Virginia opossum was the first animal to be...

        : opossums
      • Paucituberculata: rat opossums
      • Microbiotheria
        Microbiotheria
        The Monito del Monte is the only extant member of its family and the only surviving member of an ancient order, the Microbiotheria. The oldest microbiothere currently recognised is Khasia cordillerensis, based on fossil teeth from Early Palaeocene deposits at Tiupampa, Bolivia...

        : Monito del Monte
      • Dasyuromorphia
        Dasyuromorphia
        The order Dasyuromorphia comprises most of the Australian carnivorous marsupials, including quolls, dunnarts, the numbat, the Tasmanian devil, and the recently extinct thylacine...

        : marsupial carnivores
      • Peramelemorphia
        Peramelemorphia
        The order Peramelemorphia includes the bandicoots and bilbies: it equates approximately to the mainstream of marsupial omnivores...

        : marsupial omnivores
      • Notoryctemorphia: marsupial moles
      • Diprotodontia
        Diprotodontia
        Diprotodontia is a large order of about 120 marsupial mammals including the kangaroos, wallabies, possums, koala, wombats, and many others. Extinct diprotodonts include the rhinoceros-sized Diprotodon, and Thylacoleo, the so-called "marsupial lion"....

        : marsupial herbivores; kangaroos, wallabies, possums and allies
    • Infraclass Eutheria
      Eutheria
      Eutheria is a group of mammals consisting of placental mammals plus all extinct mammals that are more closely related to living placentals than to living marsupials . They are distinguished from noneutherians by various features of the feet, ankles, jaws and teeth...

      • Superorder Afrotheria
        Afrotheria
        Afrotheria is a clade of mammals, the living members of which belong to groups from Africa or of African origin: golden moles, sengis , tenrecs, aardvarks, hyraxes, elephants and sea cows. The common ancestry of these animals was not recognized until the late 1990s...

        • Afrosoricida
          Afrosoricida
          The order Afrosoricida contains the golden moles of southern Africa and the tenrecs of Madagascar and Africa, two families of small mammals that have traditionally been considered to be a part of the order Insectivora.Some biologists use Tenrecomorpha as the name for the tenrec-golden mole clade,...

          : tenrecs and golden moles
        • Macroscelidea: elephant shrews
        • Tubulidentata: Aardvark
        • Hyracoidea: hyraxes
        • Proboscidea
          Proboscidea
          Proboscidea is a taxonomic order containing one living family, Elephantidae, and several extinct families. This order was first described by J. Illiger in 1881 and encompasses the trunked mammals...

          : elephants
        • Sirenia
          Sirenia
          Sirenia is an order of fully aquatic, herbivorous mammals that inhabit swamps, rivers, estuaries, marine wetlands, and coastal marine waters. Four species are living, in two families and genera. These are the dugong and manatees...

          : manatees and dugongs
      • Superorder Xenarthra
        Xenarthra
        The superorder Xenarthra is a group of placental mammals , existent today only in the Americas and represented by anteaters, tree sloths, and armadillos. The origins of the order can be traced back as far as the Paleogene in South America...

        • Cingulata: armadillos
        • Pilosa
          Pilosa
          The order Pilosa is a group of placental mammals, extant today only in the Americas. It includes the anteaters and sloths, including the recently extinct ground sloths....

          : sloths and anteaters
      • Superorder Laurasiatheria
        Laurasiatheria
        Laurasiatheria is a large group of placental mammals believed to have originated on the northern supercontinent of Laurasia. It includes shrews, hedgehogs, pangolins, bats, whales, most hoofed mammals, and carnivorans, among others....

        • Erinaceomorpha: hedgehogs
        • Soricomorpha
          Soricomorpha
          The order Soricomorpha is taxon within the class of mammals. In previous years it formed a significant group within the former order Insectivora...

          : shrews, moles
        • Chiroptera: bats
        • Pholidota: pangolins
        • Carnivora
          Carnivora
          The diverse order Carnivora |Latin]] carō "flesh", + vorāre "to devour") includes over 260 species of placental mammals. Its members are formally referred to as carnivorans, while the word "carnivore" can refer to any meat-eating animal...

          : carnivores; cats, dogs, bears, seals, sea lions and others
        • Perissodactyla: odd-toed ungulates; horses, rhinos, tapirs
        • Artiodactyla: even-toed ungulates: antelopes, cattle, giraffes, camels, pigs, hippos, sheep, goats
        • Cetacea
          Cetacea
          The order Cetacea includes the marine mammals commonly known as whales, dolphins, and porpoises. Cetus is Latin and is used in biological names to mean "whale"; its original meaning, "large sea animal", was more general. It comes from Ancient Greek , meaning "whale" or "any huge fish or sea...

          : whales, dolphins, and porpoises
      • Superorder Euarchontoglires
        Euarchontoglires
        Euarchontoglires is a clade of mammals, the living members of which are rodents, lagomorphs, treeshrews, colugos and primates .-Evolutionary relationships:...

        • Dermoptera: colugos
        • Scandentia: treeshrews
        • Primates: lemurs, monkeys, apes and allies
        • Rodent
          Rodent
          Rodentia is an order of mammals also known as rodents, characterised by two continuously growing incisors in the upper and lower jaws which must be kept short by gnawing....

          ia: rodents
        • Lagomorpha
          Lagomorpha
          The lagomorphs are the members of the taxonomic order Lagomorpha, of which there are two living families, the Leporidae , and the Ochotonidae...

          : rabbits, hares and pikas

Class Reptilia
Reptile
Reptiles are members of a class of air-breathing, ectothermic vertebrates which are characterized by laying shelled eggs , and having skin covered in scales and/or scutes. They are tetrapods, either having four limbs or being descended from four-limbed ancestors...

 (reptiles)

  • Crocodilia
    Crocodilia
    Crocodilia is an order of large reptiles that appeared about 84 million years ago in the late Cretaceous Period . They are the closest living relatives of birds, as the two groups are the only known survivors of the Archosauria...

     (Crocodilians)
  • Rhynchocephalia (Tuataras)
  • Squamata
    Squamata
    Squamata, or the scaled reptiles, is the largest recent order of reptiles, including lizards and snakes. Members of the order are distinguished by their skins, which bear horny scales or shields. They also possess movable quadrate bones, making it possible to move the upper jaw relative to the...

     (Lizards, Snakes)
  • Testudines (Turtles and their kin)

Class Sarcopterygii
Sarcopterygii
The Sarcopterygii or lobe-finned fishes – sometimes considered synonymous with Crossopterygii constitute a clade of the bony fishes, though a strict classification would include the terrestrial vertebrates...

 (fleshy-finned fishes)

  • Subclass Actinistia
    Actinistia
    Actinistia is a subclass of mostly fossil lobe-finned fishes. This subclass contains the coelacanths, including the two living coelacanths, the West Indian Ocean coelacanth and the king of the sea....

     (coelacanths)
    • Coelacanthiformes, the coelacanth
  • Subclass Dipnoi (lungfish)
    • Ceratodontiformes
    • Lepidosireniformes
      Lepidosireniformes
      Lepidosireniformes is the order of lungfish containing the families Lepidosirenidae and Protopteridae ....


Class Thaliacea
Thaliacea
The Thaliacea comprise a class of marine animals within the subphylum Tunicata. Unlike their bottom-dwelling relatives the ascidians, thaliaceans are free-floating for their entire lifespan. The group includes both solitary and colonial species.-Anatomy:...

 (pelagic tunicates)

  • Doliolida
    Doliolida
    Doliolida are small marine animals of the Tunicata phylum, related to salps and pyrosomas. The Doliolid body is small, typically 1–2 cm long, and barrel-shaped; it features two wide siphons, one at the front and the other at the back end, and eight or nine circular muscle strands reminiscent...

  • Pyrosomida
  • Salpida, salps
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