gup·​py | \ ˈgə-pē How to pronounce guppy (audio) \
plural guppies

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

Illustration of guppy

guppy: 1 female, 2 male

Examples of guppy in a Sentence

Recent Examples on the Web Now, Hendry and colleagues have updated and expanded the original data set with more than 5,000 additional examples: everything from the cranial depth of the common chaffinch to the lifespan of the Trinidadian guppy. Amit Katwala, Wired, 4 Feb. 2022 Because of the bay’s world-class beauty as a tourist destination, some who don’t know a halibut from a guppy will often come aboard for the boat ride and a chance to catch a fish. Tom Stienstra, San Francisco Chronicle, 3 June 2021 The Jazz, inside of a few possessions, finishing up the third quarter straight ahead into and through the fourth, transformed from a guppy into a Great White. Gordon Monson, The Salt Lake Tribune, 23 Feb. 2021 In November, Xerox made a guppy-devours-the-whale bid to buy HP, an offer now set at $35 billion. Shawn Tully, Fortune, 16 Mar. 2020 Because these consumers -- who can individually bet between $1 million and $20 million over the course of a weekend, according to industry estimates -- often have more impact on the bottom line than a floor full of slot machine-playing guppies. Thomas Hesse, Billboard, 15 Apr. 2019 Their ability to discriminate numbers is on par with African grey parrots, dolphins and guppies, among others, Howard wrote. Scottie Andrew, CNN, 11 Oct. 2019 Decades ago, researchers seeded the headwaters of two streams in the mountainous country with guppies taken from a distant habitat. Elizabeth Pennisi, Science | AAAS, 16 July 2019 According to the report, NASA also infused moon dust into water for aquatic species like brown and pink shrimp, oysters, as well as guppies and minnows. Matt Mcnulty,, 30 July 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'guppy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of guppy

1925, in the meaning defined above

History and Etymology for guppy

R. J. L. Guppy †1916 Trinidadian naturalist

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Cite this Entry

“Guppy.” Dictionary, Merriam-Webster, Accessed 30 Jun. 2022.

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More Definitions for guppy


gup·​py | \ ˈgə-pē How to pronounce guppy (audio) \
plural guppies

Kids Definition of guppy

: a small tropical fish often kept as an aquarium fish

More from Merriam-Webster on guppy

Nglish: Translation of guppy for Spanish Speakers Encyclopedia article about guppy


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