HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesNigerian tonguesole Nigerian tonguesole (Cynoglossus browni) Scientific name: Cynoglossus browni Chabanaud, 1949 The Nigerian tonguesole (Cynoglossus browni) is a marine fish of the family Cynoglossidae. Native range: Eastern Atlantic, Senegal to Angola. BiologyFound on sand and mud bottoms of coastal waters. Feeds on a wide range of bottom-living invertebrates.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCynoglossus browniFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length40.2Common length30.0Depth range15–40 m (49–131 ft)EnvironmentMarine; demersal; depth range 15 - 40 mClimateTropicalDistributionEastern Atlantic: Senegal to Angola.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 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