HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPupfishesOcellated killifish Ocellated killifish (Floridichthys polyommus) Scientific name: Floridichthys polyommus Hubbs, 1936 The Ocellated killifish (Floridichthys polyommus) is a freshwater fish of the family Cyprinodontidae. In the aquarium it needs water at 22–28°C (72–82°F). Native range: North and Central America, Coastal habitats of the Yucatan Peninsula. Ocellated killifish care at a glanceTemperature22–28°C (72–82°F) Species factsScientific nameFloridichthys polyommusFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length11.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateTropicalDistributionNorth and Central America: Coastal habitats of the Yucatan Peninsula.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026