HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesJenyn's tonguefish Jenyn's tonguefish (Symphurus jenynsi) Scientific name: Symphurus jenynsi Evermann & Kendall, 1906 The Jenyn's tonguefish (Symphurus jenynsi) is a marine fish of the family Cynoglossidae. Native range: Southwest Atlantic, southeastern Brazil to about El Rincon, central Argentina. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 108-114; Anal spines: 0; Anal soft rays: 92 - 97. No lateral line on ocular side. Light brownish on ocular side, with 9 to 10 indistinct dark bands; posterior parts of dorsal and fin membranes blackish; no black blotch on dorsal and anal fins and opercle.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus jenynsiFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length31.9Depth range10–190 m (33–623 ft)EnvironmentMarine; demersal; depth range 10 - 190 m, usually 10 - 60 mClimateTemperateDistributionSouthwest Atlantic: southeastern Brazil to about El Rincon, central Argentina.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