guppy.
A species of 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. The guppies can vary in size, but males are 4 cm (1.6”) and females are 7 cm (2.8”).
Meaning & usage
A species of 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. The guppies can vary in size, but males are 4 cm (1.6”) and females are 7 cm (2.8”).
Fred kept a tank of guppies by the windowsill.
Any tiny fish.
Throw that one back; it’s just a guppy!
A tube holding paintballs before they are loaded into the gun.
A hold across the palm of the hand rather than the fingertips.
Acanthocephalus guppii
Acanthocephalus reticulatus
Girardinus guppii
Girardinus petersi
Girardinus poeciloides
Girardinus reticulatus
Haridichthys reticulatus
Heterandria guppyi
Lebistes poecilioides
Lebistes reticulatus
Poecilia poeciloides
Poecilioides reticulatus
Where this word comes from
From a name mistakenly assigned, Girardinus guppii, after biologist Robert J. L. Guppy, to previously assigned Poecilia reticulata.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.