A tiny freshwater fish, Poecilia reticulata, popular in home aquariums, that usually has a plain body and black or dark blue tail for the females and a more colorful tail for the males
small freshwater fish of South America and the West Indies; often kept in aquariums
A guppy is a small, brightly-coloured tropical fish. guppies a small brightly-coloured tropical fish. Colourful, freshwater, live-bearing topminnows (Lebistes reticulatus and Poecilia reticulata; see killifish) popular as pets in home aquariums. Guppies are hardy, energetic, easily kept, and prolific. The male, smaller and much more brightly coloured than the female, grows to about 1.5 in. (4 cm). Guppies have been bred in various ornate strains characterized by colour or pattern and by shape and size of the tail and dorsal fins