HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesSmallfin tonguefish Smallfin tonguefish (Symphurus microlepis) Scientific name: Symphurus microlepis Garman, 1899 The Smallfin tonguefish (Symphurus microlepis) is a marine fish of the family Cynoglossidae. Native range: Eastern Central Pacific, known from a single specimen from the Gulf of Panama. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 106; Anal spines: 0; Anal soft rays: 92; Vertebrae: 57Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus microlepisFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range523–530 m (1716–1739 ft)EnvironmentMarine; bathydemersal; depth range 523 - 530 mClimateDeep-waterDistributionEastern Central Pacific: known from a single specimen from the Gulf of Panama.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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