HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesOffshore tonguefish Offshore tonguefish (Symphurus civitatium) Scientific name: Symphurus civitatium Ginsburg, 1951 The Offshore tonguefish (Symphurus civitatium) is a marine fish of the family Cynoglossidae. Native range: Western Atlantic, North Carolina to northern Florida and northern Gulf of Mexico in USA, from Florida to Texas. BiologyInhabits bays and shallow coastal waters.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus civitatiumFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length17.0Depth range1–73 m (3–240 ft)EnvironmentMarine; demersal; depth range 1 - 73 m, usually 11 - 45 mClimateSubtropicalDistributionWestern Atlantic: North Carolina to northern Florida and northern Gulf of Mexico in USA, from Florida to Texas.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