Pupfish

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any of a group of small killifish belonging to ten genera of the family Cyprinodontidae.

Synonyms

All synonyms
cyprinodont

Etymology

From pup + fish, said to derive from the mating habits of the males, whose activities vaguely resemble puppies at play.

Related phrases

Devils Hole pupfish

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.