AskDefine | Define Betta

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see betta



  1. a genus of fish, including species Betta splendens, the Siamese fighting fish

Extensive Definition

Betta Bleeker, 1850 is a large genus of small, often colorful, freshwater ray-finned fishes in the gourami family (Osphronemidae). The type species is B. picta, the spotted betta. By far the best known Betta species, however, is B. splendens, the Siamese fighting fish.


All the Betta species are small fishes, but they vary considerably in size, ranging from under 2.5 cm (1 inch) total length in B. chanoides to five feet in the Akar betta (B. akarensis).
The various bettas can be divided into two groups, based on their spawning behaviour: some build bubble nests, like B. splendens, while others are mouthbrooders, like B. picta. The mouthbrooding species are sometimes called "pseudo bettas", and are sometimes speculated to have evolved from the nest-builders in an adaptation to their fast-moving stream habitats.


Betta fish are not big eaters but should be fed a small amount once or twice a day. They can be fed floating flake food, freeze dried blood worms, live black worms, or frozen brine shrimp.


There is often much confusion in terminology regarding these fish. So-called "Siamese fighting fish", B. splendens, are frequently sold in the United States simply as "bettas." Fish fanciers are thus often unaware that, as of 2006, there are around 65 species classified within the genus Betta. A further source of confusion is that while the generic name Betta is italicized and capitalized, when used as a common name it is usually not capitalized. The common name of Betta pugnax, for example, is thus Penang betta.
The name Betta (or betta) is .
The United Nations Environment Programme lists an unconfirmed species, Betta cf. tomi, as having become extinct in Singapore between 1970 and 1994. This likely refers to the extirpated Singaporean population of B. tomi, which continues to exist in the wild in Indonesia and Malaysia as well as in captivity; the Red List classifies it as Vulnerable.


The currently described Betta species can be grouped into "complexes" for conservation purposes. (This grouping of species makes no claim at representing a taxonomic reality.) The complexes of the associated species are:

External links


Betta in Bosnian: Betta
Betta in Esperanto: Beta (fiŝo)
Betta in French: Betta
Betta in German: Kampffische
Betta in Hebrew: דגי קרב
Betta in Italian: Betta (pesci)
Betta in Lithuanian: Gaidukai (guramiai)
Betta in Norwegian: Kampfisker
Betta in Polish: Bojownik (ryba)
Betta in Serbian: Бета (зоологија)
Betta in Swedish: Kampfiskar
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