Widemouth gambusia
Encyclopedia
The widemouth gambusia (Gambusia eurystoma) is a species
of freshwater
fish. It is a member of the family Poeciliidae
of the order
Cyprinodontiformes
. It is native to Mexico
.
This species reaches a maximum overall length of approximately 3.5 cm (1.4 in).
Little is known about G. eurystoma, but IUCN classifies it as Critically Endangered
on the basis of a very small (less than 250 individuals) and rapidly falling population and a small, localized, and diminishing geographical distribution.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of freshwater
Freshwater
Fresh water is naturally occurring water on the Earth's surface in ice sheets, ice caps, glaciers, bogs, ponds, lakes, rivers and streams, and underground as groundwater in aquifers and underground streams. Fresh water is generally characterized by having low concentrations of dissolved salts and...
fish. It is a member of the family Poeciliidae
Poeciliidae
Poeciliidae is a family of fresh-water fish which are live-bearing aquarium fish . They belong to the order Cyprinodontiformes, tooth-carps, and include well-known aquarium fish such as the guppy, molly, platy, and swordtail...
of the order
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
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...
. It is native to Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
.
This species reaches a maximum overall length of approximately 3.5 cm (1.4 in).
Little is known about G. eurystoma, but IUCN classifies it as Critically Endangered
Endangered species
An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...
on the basis of a very small (less than 250 individuals) and rapidly falling population and a small, localized, and diminishing geographical distribution.