Guppy Poecilia reticulata

Guppy male
Guppy pair
Guppy male
Male Guppies are slimmer and more colourful than females (female above centre left, with male centre right), with long flowing dorsal and tail fins. Males grow 2-3cm long and females 3-6cm. Females are "live bearers" - they give birth to live, independent young rather than laying eggs.
Guppy
Guppy with Cardinal Tetra
Guppy
The Guppy is native to freshwater of the Caribbean, particularly Trinidad and Venezuela, but has been introduced to most tropical and subtropical areas as an attempt to control mosquito larvae. Its natural diet is zooplankton, algae and insect larvae; however it has generally has a bad impact on native fish in those areas where it has been introduced. In captivity, different breeds with various male colour and tail-shape variations are bred.