HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersKobe flounder Kobe flounder (Crossorhombus kobensis) Scientific name: Crossorhombus kobensis Jordan & Starks, 1906 The Kobe flounder (Crossorhombus kobensis) is a marine fish of the family Bothidae. Native range: Northwest Pacific, Japan, Formosa Strait, northern part of the South China Sea. Possibly occurring in the Western Central Pacific. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 79-86; Anal spines: 0; Anal soft rays: 59 - 67. Tip of isthmus below middle of lower eye. Scales on ocular side ctenoid, armed with a row of hairlike spines. Caudal fin with 3 simple rays on upper and lower margins respectively. Pectoral fin elongated into a filament, longer than head. Caudal fin without a dark band. In male, body on blind side stained with dark-blue except for head, interorbital width broader and pectoral fin longer than in female.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCrossorhombus kobensisFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range50–275 m (164–902 ft)EnvironmentMarine; demersal; depth range 50 - 275 mClimateTemperateDistributionNorthwest Pacific: Japan, Formosa Strait, northern part of the South China Sea. Possibly occurring in the Western Central Pacific.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