HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesLongtail tonguefish Longtail tonguefish (Symphurus pelicanus) Scientific name: Symphurus pelicanus Ginsburg, 1951 The Longtail tonguefish (Symphurus pelicanus) is a marine fish of the family Cynoglossidae. Native range: Western Atlantic, Florida, USA and northern Gulf of Mexico to Trinidad; absent from West Indies. BiologyInhabits bays and shallow coastal waters; mainly on silt and soft mud substrates. Little is known of its ecology.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus pelicanusFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length9.0Depth range24–133 m (79–436 ft)EnvironmentMarine; demersal; depth range 24 - 133 m, usually 31 - 70 mClimateTropicalDistributionWestern Atlantic: Florida, USA and northern Gulf of Mexico to Trinidad; absent from West Indies.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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