HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesDurban tonguesole Durban tonguesole (Cynoglossus durbanensis) Scientific name: Cynoglossus durbanensis Regan, 1921 The Durban tonguesole (Cynoglossus durbanensis) is a brackish-water fish of the family Cynoglossidae. Native range: Western Indian Ocean, Kenya to Natal, South Africa. Also Zanzibar and Madagascar. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 98-105; Anal spines: 0; Anal soft rays: 78 - 84. Upper side of body and fins pale brownish with dark spots and blotches; 2 lateral lines on eyed side, none on blind side.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCynoglossus durbanensisFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length20.0EnvironmentMarine; brackish; demersalClimateTropicalDistributionWestern Indian Ocean: Kenya to Natal, South Africa. Also Zanzibar and Madagascar.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 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