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n. pl. killifish or kil·li·fish·es
Any of numerous small fishes of the family Fundulidae and related families of the order Cyprinidontiformes, chiefly inhabiting fresh and brackish waters in warm regions and popular in home aquariums.

[Perhaps kill + fish.]


n, pl -fish or -fishes
(Animals) any of various chiefly American minnow-like cyprinodont fishes of the genus Fundulus and related genera, of fresh and brackish waters: used as aquarium fishes, to control mosquitoes, and as anglers' bait
[C19: see kill2, fish]


(ˈkɪl iˌfɪʃ)

n., pl. (esp. collectively) -fish, (esp. for kinds or species) -fish•es.
1. any small freshwater fish of the family Cyprinodontidae, used as bait and for mosquito control.
2. Also called topminnow. any of several small North American freshwater killifishes, used as bait and for mosquito control.
3. any of several livebearers.
[1805–15, Amer.; killi- (perhaps kill2 + -y2 + fish]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.killifish - small mostly marine warm-water carp-like schooling fisheskillifish - small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control
cyprinodont - any member of the family Cyprinodontidae
Fundulus heteroclitus, mummichog - silver-and-black killifish of saltwater marshes along the Atlantic coast of the United States
Fundulus majalis, may fish, mayfish, striped killifish - black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States
rivulus - found in small streams of tropical America; often kept in aquariums; usually hermaphroditic
American flagfish, flagfish, Jordanella floridae - a fish with a dark-blue back and whitish sides with red stripes; found in swamps and streams of Florida
References in periodicals archive ?
And in laboratories across the world, the markers of age in over-the-hill mice, rats and turquoise killifish are, sometimes, being reversed.
In the killifish, Fundulus heteroclitus, inhibited hepatic CAT activity was found by Pruell and Engelhardt (1980) both in vivo and in vitro exposure to dissolved Cd2+.
Thanks to its extremely high level of genetic diversity, Atlantic killifish has evolved to withstand levels of toxic pollutants that would normally kill not just them but most other fish too.
Experiments using fish models, particularly zebrafish but also other small fishes including medaka (Oryzias latipes) and killifish (Fundulus heteroclitus), are driving important contributions to our understanding of toxicity in the cardiovascular, immune, developmental, behavioral, and nervous systems.
Five breeds of mosquito-eating fish are bred at Hackettstown for mosquito control; the fathead minnow (Pimephales promelas), the freshwater killifish (Fundulus diaphanus), the pumpkinseed sunfish (Lepomis gibbosus), the bluegill sunfish (Lepomis macrochirus) and the Gambusia affinis, also known as the mosquitofish, for biological control.
Specifically, he is studying a population of estuarine fish, Atlantic killifish (Fundulus heteroclitus).
Wood and Grosell (2012) concluded that the pathway was mainly transcellular in killifish intestine (Fundulus heteroclitus: Linnaeus, 1766), which is in strong contrast to the situation in the mouse jejunum, which Rehman et al.
There has been a similar success for the tiny Corfu killifish, which is found only in Greece.