HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesElongate tonguesole Elongate tonguesole (Symphurus ligulatus) Scientific name: Symphurus ligulatus Cocco, 1844 The Elongate tonguesole (Symphurus ligulatus) is a marine fish of the family Cynoglossidae. Native range: Eastern Atlantic, Cap Juby, Mauritania to Angola. BiologyOccurs on mud bottoms of the continental shelf.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus ligulatusFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length11.2Depth range70–800 m (230–2625 ft)EnvironmentMarine; demersal; depth range 70 - 800 mClimateTropicalDistributionEastern Atlantic: Cap Juby, Mauritania to Angola.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceHigh, minimum population doubling time less than 15 months (K=0.65) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026