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 Their ability to discriminate numbers is on par with African grey parrots, dolphins and guppies, among others, Howard wrote. Scottie Andrew, CNN, "Bees are better at math when they're punished for the wrong answer, a new study finds," 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, "Boosting genetic diversity may save vanishing animal populations. But it may also backfire," 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,, "NASA Fed Moon Dust to Cockroaches to Test for Contamination after the 1969 Lunar Landing," 30 July 2019 Birds were represented by Japanese quail; brown shrimp, pink shrimp and oysters were used to represent shellfish; houseflies and moths joined the cockroaches to represent insects; and guppies and minnows were used to represent fish. Allen Kim, CNN, "NASA fed some of its precious Apollo 11 lunar samples to cockroaches and mice," 29 July 2019 Free of charge, mosquito control workers provide guppies that are placed in small ponds, rain barrels or other contained bodies of water on people's properties. Casey Smith, Indianapolis Star, "With a rainy spring, Marion County had few mosquitoes. That's no longer the case.," 22 July 2019 Adding new blood to small populations really does help, a long-term experimental evolution study of wild guppies in Trinidad has demonstrated, says Brendan Reid, an MSU conservation biologist who works with Fitzpatrick. Elizabeth Pennisi, Science | AAAS, "Boosting genetic diversity may save vanishing animal populations. But it may also backfire," 16 July 2019 As a kid, Roland Radinski made money by breeding and selling fancy guppies. Judy Rose, Detroit Free Press, "Kresge mansion, one of Detroit's largest, is about to hit the market," 8 June 2019 However, the fish kept its common name as guppy until today. Michael Ohl,, "From the Hitler beetle to the Beyoncé fly," 8 Apr. 2018

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.

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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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Time Traveler for guppy

Time Traveler

The first known use of guppy was in 1925

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Statistics for guppy

Last Updated

7 Dec 2019

Cite this Entry

“Guppy.” The Dictionary, Merriam-Webster Inc., Accessed 12 December 2019.

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More Definitions for guppy


How to pronounce guppy (audio)

English Language Learners Definition of guppy

: a small tropical fish


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

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Rhyming Dictionary: Words that rhyme with guppy

Spanish Central: Translation of guppy

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

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a period of high artistic development

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