HomeFish encyclopediaRay-finned fishesSpiny eelsSwamp-eelsBlind swamp eel Blind swamp eel (Ophisternon infernale) Scientific name: Ophisternon infernale Hubbs, 1938 The Blind swamp eel (Ophisternon infernale) is a freshwater fish of the family Synbranchidae. Native range: Central America, Yucatan, Mexico. BiologyAdults inhabit cave systems. The male guards and builds nest or burrow.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOphisternon infernaleFamilySynbranchidae (Swamp-eels)OrderSynbranchiformes (Spiny eels)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; demersalClimateTropicalDistributionCentral America: Yucatan, Mexico.Conservation status (IUCN)Endangered (EN) (A1ac+2c, B1+2c)Threat to humansHarmlessUsesFisheries: of no interestResilienceMedium, 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