Noun
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small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control
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cyprinodont any member of the family Cyprinodontidae
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fundulus heteroclitus,
mummichog silver-and-black killifish of saltwater marshes along the Atlantic coast of the United States
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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
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rivulus found in small streams of tropical America; often kept in aquariums; usually hermaphroditic
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