HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersDrab flounder Drab flounder (Arnoglossus tapeinosoma) Scientific name: Arnoglossus tapeinosoma Bleeker, 1865 The Drab flounder (Arnoglossus tapeinosoma) is a marine fish of the family Bothidae. Native range: Indo-West Pacific, Persian Gulf and Gulf of Oman to Sumatra (Indonesia) and China. BiologyDorsal soft rays (total): 91; Anal soft rays: 69. Body with no conspicuous spots on dorsal and anal fins. Head length, 4.28 in SL. Maxillary extends slightly beyond the anterior margin of the lower eye; 2.64 in HL. Long, slender, non-serrated gill-rakers on first arch. Prevomer tip not projecting into the mouth cavity. Deciduous scales; ctenoid on ocular side; cycloid on blind side.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArnoglossus tapeinosomaFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.7Depth range46–100 m (151–328 ft)EnvironmentMarine; demersal; depth range 46 - 100 mClimateSubtropicalDistributionIndo-West Pacific: Persian Gulf and Gulf of Oman to Sumatra (Indonesia) and China.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