HomeFreshwater aquarium fishRainbowfish & killifishCalifornia killifish California killifish (Fundulus parvipinnis) Scientific name: Fundulus parvipinnis Girard, 1854 The California killifish (Fundulus parvipinnis) is a brackish-water fish of the family Fundulidae. Native range: Eastern Pacific, Morro Bay, California, USA to Bah?a Magdalena, Baja California, Mexico. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 10-15; Anal spines: 0; Anal soft rays: 11 - 13; Vertebrae: 34 - 37. Branchiostegal rays: 5-6.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameFundulus parvipinnisFamilyFundulidae (Topminnows and killifishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length10.8Common length7.0EnvironmentMarine; brackish; benthopelagic; non-migratoryClimateSubtropicalDistributionEastern Pacific: Morro Bay, California, USA to Bah?a Magdalena, Baja California, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (K=0.93; tmax=3) 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