HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesMottled tonguefish Mottled tonguefish (Symphurus varius) Scientific name: Symphurus varius Garman, 1899 The Mottled tonguefish (Symphurus varius) is a marine fish of the family Cynoglossidae. Native range: Eastern Pacific, Cocos and the Galapagos islands. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 90-97; Anal spines: 0; Anal soft rays: 77 - 81; Vertebrae: 50 - 52Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus variusFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length10.8Common length9.0Depth range70–278 m (230–912 ft)EnvironmentMarine; demersal; depth range 70 - 278 m, usually 100 - 200 mClimateTropicalDistributionEastern Pacific: Cocos and the Galapagos islands.Conservation status (IUCN)Least Concern (LC)Threat 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