noun \ˈgə-pē\

: a small tropical fish

plural guppies

Full Definition of GUPPY

:  a small bony fish (Poecilia reticulata of the family Poeciliidae) especially of Barbados, Trinidad, and Venezuela that is a live-bearer and is often kept as an aquarium fish

Illustration of GUPPY

Origin of GUPPY

R.J.L. Guppy †1916 Trinidadian naturalist
First Known Use: 1925

Rhymes with GUPPY


noun    (Concise Encyclopedia)

(Top) Male and (bottom) female guppies (Lebistes reticulatus)—Jane Burton—Bruce Coleman Ltd.

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.


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