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killifish

(kil′i fis̸h′)

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any of a family (Cyprinodontidae, order Atheriniformes) of small, freshwater bony fishes used in mosquito control and as bait

also killie

Origin: killie, killifish (< kill + -ie) + fish

See killifish in American Heritage Dictionary 4

noun pl. killifish killifish or kil·li·fish·es

Any of numerous small fishes of the family Cyprinodontidae, including the guppy and mosquito fish, inhabiting chiefly fresh and brackish waters in warm regions.

Origin:

Origin: Perhaps kill²

Origin: + fish

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