Very few fish show sexual dimorphism, out of those few the Zebra Angelfish, Genicanthus caudovittatus, is one of them. Male Zebra Angelfish have the zebra-like stripes with a forked tail while the female has a light blue body with a black band covering its eyes also with a forked tail. Since they are more peaceful than many other Angelfish, they can be kept as a mated pair, or in a small school of females. Avoid keeping two males in the same tank, as it can lead to extreme aggression.