HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersMany-spotted lefteye flounder Many-spotted lefteye flounder (Arnoglossus polyspilus) Scientific name: Arnoglossus polyspilus G?nther, 1880 The Many-spotted lefteye flounder (Arnoglossus polyspilus) is a marine fish of the family Bothidae. Native range: Eastern Indian Ocean and Western Pacific, Bay of Bengal to southern Japan, Taiwan, New Caledonia, and several areas of the Indo-Australian Archipelago. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 100-114; Anal spines: 0; Anal soft rays: 78 - 91. Mouth rather small, contained2. to 2.6 times in head length, maxillary extending to below the anterior margin or anterior 1/3 of lower eye. Gill rakers present on upper limb. Caudal fin with 2 simple rays on upper and lower margins. In the male, several anterior dorsal rays somewhat elongated.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArnoglossus polyspilusFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length24.0Depth range4–390 m (13–1280 ft)EnvironmentMarine; demersal; depth range 4 - 390 mClimateTropicalDistributionEastern Indian Ocean and Western Pacific: Bay of Bengal to southern Japan, Taiwan, New Caledonia, and several areas of the Indo-Australian Archipelago.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceMedium, 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