The critically endangered fish, discovered in the commercial aquarium trade, can only be found in one forest swamp on Sumatra ...

It is usually quite easy to differentiate between the male and female betta fish by appearance, but there are other subtle differences between the genders of the fish. You must be aware of these ...

The unique fighting fish ... Betta iaspis is described as having a reddish brown head, irises with “iridescent bluish patches,” a blackish body with a “pale flush of iridescent blue” and ...