Endlers Guppy has become very popular, particularly for nano tanks. The males are very attractive with their luminescent colours. Previously considered a variety of Guppy, it is now considered a separate species. Males only grow to around half the size of the females which can grow to 4-4.5cm. A number of colour varieties have been created by breeders, some the result of hybridising with Guppies. Ideal fish for Nano tanks.