guppy

noun

gup·​py ˈgə-pē 

plural guppies

: 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

• 1 female
• 2 male

Examples of guppy in a Sentence

Recent Examples on the Web

That means the 200+ neoclouds are going to see guppy-level death and consolidation. — Zev Fima, CNBC, 26 Oct. 2026

His favorite activity is popping bubbles, but anytime the guppies are up for some fun (especially Gil), Bubble Puppy is front and center. — Amanda Rock, Parents, 1 Oct. 2026

On the other side of the exam room door was a toddler propped in her mother’s arms, coughing between guppy breaths. — Joy Evers, STAT, 20 July 2026

In a classic experiment, guppies, following their neighbors, ended up schooling behind a robotic fish that guided them toward food. — R. Alexander Bentley, The Conversation, 26 Feb. 2026

Word History

Etymology

R. J. L. Guppy †1916 Trinidadian naturalist

First Known Use

1925, in the meaning defined above

Rhymes for guppy

• puppy
• yuppie

Kids Definition

guppy

noun

gup·​py ˈgəp-ē 

plural guppies

: a small tropical minnow often kept in aquariums