Bombina orientalis
Encyclopedia
The Oriental Fire-bellied Toad, (Bombina orientalis) is a small (4 cm, 2") semi-aquatic frog
Frog
Frogs are amphibians in the order Anura , formerly referred to as Salientia . Most frogs are characterized by a short body, webbed digits , protruding eyes and the absence of a tail...

 species
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...

 found in Korea
Korea
Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

, north-eastern China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 and adjacent parts of Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

. An introduced population exists near Beijing
Beijing
Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

. They are commonly kept as pets in land and water vivariums. The orientalis is also known as the tuti toad.

Description

Oriental fire-bellied toads are the most easily recognizable species of Bombina. They are typically a bright green with black mottling dorsally, but their coat may also darken to brown and even black depending on the scenery presented. Like other Bombina species, Bombina orientalis have a bright yellow to red (generally bright reddish-orange) ventral region mottled with dark brown to black. The skin on their dorsal side is covered in small tubercle
Tubercle
A tubercle is generally a wart-like projection, but it has slightly different meaning depending on which family of plants or animals it is used to refer to....

s. Although it is typically referred to as a toad, the Fire-Bellied Toad is not a member of the toad
Toad
A toad is any of a number of species of amphibians in the order Anura characterized by dry, leathery skin , short legs, and snoat-like parotoid glands...

 family (Bufonidae.) As such, it may properly be referred to as a frog.

They are noted for their bright green and black coloration on their backs, and brilliant orange and black on their underside. In the wild, B. orientalis eat various types of small aquatic arthropods (among other things) from which they obtain Carotene
Carotene
The term carotene is used for several related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but cannot be made by animals. Carotene is an orange photosynthetic pigment important for photosynthesis. Carotenes are all coloured to the human eye...

, which helps to color their bellies. These bright colors serve as a warning to predators of toxicity. The toxin is secreted through the skin mostly on the hind legs and sometimes the belly in a milky-like substance when the frog is disturbed or frightened. Not only will they emit this toxin, they will also lay on their back to show the colour of the belly, indicating its toxicity to any predators.

Habitat

Like other Bombina species, Bombina orientalis is mostly aquatic, inhabiting warm, humid forested regions. They spend most of their time in the water, among dense vegetation.

Reproduction

Breeding takes place in the spring with the warming of the weather and increase in rain. Males call to the females with a light barking croak. They jump onto the back of any other fire-bellied toad that happens to pass by, often leading to male-male confusion, but rarely any sort of fighting. Females lay anywhere from 40 to 100 eggs
Egg (biology)
An egg is an organic vessel in which an embryo first begins to develop. In most birds, reptiles, insects, molluscs, fish, and monotremes, an egg is the zygote, resulting from fertilization of the ovum, which is expelled from the body and permitted to develop outside the body until the developing...

 in a large cluster, usually around submerged plants, near the water's edge. Tadpoles hatch from the eggs in 3–10 days depending on the temperature of the water. The larvae begin to develop legs in 6–8 weeks, and are fully metamorphosed and begin venturing on land in 12–14 weeks.

In captivity

In the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, B. orientalis is commonly kept as a pet. They are generally a hardy species that do well in captivity if given good water quality. They are commonly fed with small crickets
Cricket (insect)
Crickets, family Gryllidae , are insects somewhat related to grasshoppers, and more closely related to katydids or bush crickets . They have somewhat flattened bodies and long antennae. There are about 900 species of crickets...

 dusted with a calcium powder. They can also be fed with other small insects and grubs. They should not be fed mealworms, as these larva
Larva
A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

 possess hard shells which fire-bellied toads have a hard time digesting or passing.

Fire-bellied Toads are usually fed live food. They only hunt prey which moves, ignoring any food item which is too slow or still. At times, they may even release prey that doesn't put up a strong enough fight. Some keepers have success by "hand" feeding food items, attaching pieces to a long piece of wood or straw and waving it in front of the frogs. Oriental fire-bellied toads can be trained to accept food in this manner.

While not the most toxic of amphibians, regular handling is not recommended (avoid if there are cuts on your hands) and your hands should always be washed thoroughly immediately after touching the frog or cleaning the tank. Although harmless to the skin of most, if ingested it can cause discomfort. Because of their mild toxicity, oriental fire-bellied toads should not be kept with most other types of frog or amphibian.

When kept in captivity, it is important to provide adequate hiding places as Bombina orientalis need to feel a sense of security. They tend to spend the majority of their time basking in neck-level dechlorinated water (if they do not completely immerse themselves.) An ideal filter is a type of mini filter, as long as the outlet is blocked in some way ideally by a barrier of stones, it disperses the water better without creating a strong current.

Because members of the Bombina genus have short, round tongues that cannot be pushed out of the mouth, fire-bellied toads cannot spit out items that have been accidentally taken into the mouth. As a result, their enclosures must not include gravel of a size which may be accidentally ingested. Larger rocks, Eco Earth or sand, may be used instead. An animal which swallows a piece of gravel it cannot pass will become impacted
Impaction
Impaction, from the Latin impingere, is a medical term used to describe several different types of blockage.- In Reptiles : Impaction occurs in reptiles when they consume something that they cannot digest. Common causes of impaction are rocks and sand which might be accidentally consumed when the...

 and will die unless it receives medical attention.

In captivity, oriental fire-bellied toads have lived for more than a dozen years, with 15 years being common. Some older reports document them as living up to 30 years .

In captivity, providing a source of Beta-Carotene
Beta-carotene
β-Carotene is a strongly-coloured red-orange pigment abundant in plants and fruits. It is an organic compound and chemically is classified as a hydrocarbon and specifically as a terpenoid , reflecting its derivation from isoprene units...

 (such as carrots) to the prey insects (crickets) early in a frog's adult stage allows it to develop brighter coloration.

Oriental fire-bellied toads should be kept in water, with some kind of land or island which allows them to periodically climb out of the water. Be careful though, these frogs aren't strong swimmers and may drown in water that is too deep. An ideal enclosure has plenty of land and water-based hiding places, as well as a land-based location suitable for depositing live food. Fire-bellied Toads have a sensitivity to chlorine
Chlorine
Chlorine is the chemical element with atomic number 17 and symbol Cl. It is the second lightest halogen, found in the periodic table in group 17. The element forms diatomic molecules under standard conditions, called dichlorine...

 and chloramine
Chloramine
Chloramines are derivatives of ammonia by substitution of one, two or three hydrogen atoms with chlorine atoms. Monochloramine is an inorganic compound with the formula NH2Cl. It is an unstable colourless liquid at its melting point of -66° temperature, but it is usually handled as a dilute...

- tap water should be treated or allowed to stand for several days, to allow chlorine to dissipate, before adding it to their environment. Chloramine will not dissipate in this manner, so tap water treated with chloramine must be treated with a dechloramine agent (and then allowed to stand) before being added.

Further reading

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