HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesSplitfinsBalsas splitfin Balsas splitfin (Ilyodon whitei) Scientific name: Ilyodon whitei Meek, 1904 The Balsas splitfin (Ilyodon whitei) is a freshwater fish of the family Goodeidae. In the aquarium it needs water at 20–26°C (68–79°F). Native range: Central America, Morelos and Michoacan, Mexico. Balsas splitfin care at a glanceTemperature20–26°C (68–79°F) Species factsScientific nameIlyodon whiteiFamilyGoodeidae (Splitfins)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length6.0EnvironmentFreshwater; demersalClimateTropicalDistributionCentral America: Morelos and Michoacan, Mexico.Conservation status (IUCN)Critically Endangered (CR) (A1ac+2bc)Threat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026