HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersLong lefteye flounder Long lefteye flounder (Arnoglossus elongatus) Scientific name: Arnoglossus elongatus Weber, 1913 The Long lefteye flounder (Arnoglossus elongatus) is a marine fish of the family Bothidae. Native range: Western Pacific, Indonesia, Philippines, northwest Australia, and possibly Taiwan. BiologyDorsal soft rays (total): 100-108; Anal soft rays: 78 - 83. Body without a large dark spot posteriorly on the base both the dorsal and anal fins (Ref 42535).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArnoglossus elongatusFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length11.0Depth range3–224 m (10–735 ft)EnvironmentMarine; demersal; depth range 3 - 224 mClimateTropicalDistributionWestern Pacific: Indonesia, Philippines, northwest Australia, and possibly Taiwan.Conservation 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