HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesDouble-spot tonguesole Double-spot tonguesole (Symphurus ocellatus) Scientific name: Symphurus ocellatus von Bonde, 1922 The Double-spot tonguesole (Symphurus ocellatus) is a marine fish of the family Cynoglossidae. Native range: Western Indian Ocean, known only from Mozambique to Durban, South Africa. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 95-102; Anal spines: 0; Anal soft rays: 80 - 90. Upper side uniformly brownish; black spot covering posterior part of dorsal and anal fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSymphurus ocellatusFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range430–640 m (1411–2100 ft)EnvironmentMarine; bathydemersal; depth range 430 - 640 mClimateDeep-waterDistributionWestern Indian Ocean: known only from Mozambique to Durban, South Africa.Conservation status (IUCN)Not EvaluatedThreat 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