HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesPygmy tonguefish Pygmy tonguefish (Symphurus parvus) Scientific name: Symphurus parvus Ginsburg, 1951 The Pygmy tonguefish (Symphurus parvus) is a marine fish of the family Cynoglossidae. Native range: Western Atlantic, North Carolina and northern Gulf of Mexico in USA to Yucatan. BiologyInhabits bays and shallow coastal waters. Sexual maturity of females attained at 4-4.5 cm.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus parvusFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length9.0Depth range20–440 m (66–1444 ft)EnvironmentMarine; demersal; depth range 20 - 440 m, usually 31 - 440 mClimateSubtropicalDistributionWestern Atlantic: North Carolina and northern Gulf of Mexico in USA to Yucatan.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