The Madagascar Rainbowfish is one of two species native to a small region of eastern Madagascar.
Both B. madagascariensis and B. geayi are called Madagascar Rainbowfish although the latter, from river
drainages slightly south of the former, is also called the Red-tailed Silverside. They have slightly different colour
patterns on some fins (on this page is the B. geayi).
Male Madagascar Rainbowfish with Panchax.
Female Madagascar Rainbowfish with Panchax.
Male Madagascar Rainbowfish.
They grow to some 10-12cm long and are related to (with similar habits to) the Australasian rainbowfishes.
Males are more brightly-coloured than females.
Both species are threatened by habitat loss.