HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesDusky tongue sole Dusky tongue sole (Paraplagusia sinerama) Scientific name: Paraplagusia sinerama Chapleau & Renaud, 1993 The Dusky tongue sole (Paraplagusia sinerama) is a marine fish of the family Cynoglossidae. Native range: Western Pacific, northern Australia (including Joseph Bonaparte Gulf, Western Australia) and southern coast of Papua New Guinea. BiologyDorsal soft rays (total): 111-117; Anal soft rays: 87 - 91. Eyed-side body and head tan, dark pigmentation on posterior edge of scales (no paler ocelli or dark speckles) more prominent near margins of body, membrane between rays of dorsal and anal fins dark brown on both sides of body, labial papillae unbranched, scales ctenoid on both sides of body, and caudal vertebrae 44-46.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParaplagusia sineramaFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length28.0Depth range0–50 m (0–164 ft)EnvironmentMarine; demersal; depth range 0 - 50 mClimateTropicalDistributionWestern Pacific: northern Australia (including Joseph Bonaparte Gulf, Western Australia) and southern coast of Papua New Guinea.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