The Collaborative International Dictionary
Poecilia reticulata
guppy \guppy\ n. [Named after R. J. L. Guppy, who brought
speciments to the British museum.
--RHUD]
A small freshwater fish of South America and West Indies
( Lebistes reticulatus or Poecilia reticulata, originaly
called Gerardinus guppyi), often kept in aquariums; also
called rainbow fish.
Syn: rainbow fish, Lebistes reticulatus.