HomeFreshwater aquarium fishRainbowfish & killifishSheepshead minnow Sheepshead minnow (Cyprinodon variegatus variegatus) Scientific name: Cyprinodon variegatus variegatus Lacep?de, 1803 The Sheepshead minnow (Cyprinodon variegatus variegatus) is a freshwater fish of the family Cyprinodontidae. BiologyA short, deep-bodied, compressed fish. Scales large, dorsal profile straight from tip of snout to front of dorsal fin; dark marginal band on tail.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCyprinodon variegatus variegatusFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length9.0Common length3.0EnvironmentMarine; freshwater; brackish; benthopelagic; non-migratoryClimateSubtropicalDistributionNorth and South America: Massachusetts, USA to northeastern Mexico; also West Indies; northern coast of South America. Bahamas, Antilles, Gulf of Mexico, Yucatan and Venezuela.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercial; bait: usuallyResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm More rainbowfish & killifishFlagfishJordanella floridaeBluefin killifishLucania goodeiKamaka rainbowfishMelanotaenia kamakaYellowbelly gudgeonAllomogurnda nesolepisStriped panchaxAplocheilus lineatusRedtail nothoNothobranchius guentheriSee all rainbowfish & killifish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026