HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesBengal tonguesole Bengal tonguesole (Cynoglossus semifasciatus) Scientific name: Cynoglossus semifasciatus Day, 1877 The Bengal tonguesole (Cynoglossus semifasciatus) is a marine fish of the family Cynoglossidae. Native range: Indian Ocean, East of India and Sri Lanka (Ceylon). Species factsScientific nameCynoglossus semifasciatusFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Depth range12–18 m (39–59 ft)EnvironmentMarine; demersal; depth range 12 - 18 mClimateTropicalDistributionIndian Ocean: East of India and Sri Lanka (Ceylon).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (K=1.86) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026