Siamese fighting fish
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|Siamese fighting fish|
|Selectively bred halfmoon male displaying his flared opercula|
The Siamese fighting fish (Betta splendens), commonly known as the betta, is a popular fish in the aquarium trade. Bettas are a member of the gourami family and are known to be highly territorial. Males in particular are prone to high levels of aggression and will attack each other if housed in the same tank. If there is no means of escape, this will usually result in the death of one or both of the fish. Female bettas can also become territorial towards each other if they are housed in too small of an aquarium. It is typically not recommended to keep male and female bettas together, except temporarily for breeding purposes which should always be undertaken with caution.
This species is native to the
B. splendens usually grows to a length of about 6.5 cm (2.6 in). Although aquarium specimens are widely known for their brilliant colours and large, flowing fins, the natural coloration of B. splendens is generally dull green, brown and grey, and the