HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersDwarf lefteye flounder Dwarf lefteye flounder (Arnoglossus tenuis) Scientific name: Arnoglossus tenuis G?nther, 1880 The Dwarf lefteye flounder (Arnoglossus tenuis) is a marine fish of the family Bothidae. Native range: Western Pacific, southern Japan to the South China Sea, Queensland, and New Caledonia. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 92-98; Anal spines: 0; Anal soft rays: 69 - 77. Mouth small, contained 2.6 to 2.9 times in head length. Maxillary extending to anterior margin of the eye. Few scales on lateral line, and few dorsal and anal fin rays. Attains 10 cm SL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArnoglossus tenuisFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range80–100 m (262–328 ft)EnvironmentMarine; demersal; depth range 80 - 100 mClimateTemperateDistributionWestern Pacific: southern Japan to the South China Sea, Queensland, and New CaledoniaConservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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