HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsDark chub Dark chub (Nipponocypris temminckii) Scientific name: Nipponocypris temminckii Temminck & Schlegel, 1846 The Dark chub (Nipponocypris temminckii) is a freshwater fish of the family Cyprinidae. In the aquarium it needs water at 12–26°C (54–79°F). Native range: Asia, Japan, the Korean Peninsula, and China. Occurrence in Taiwan doubtful. Dark chub care at a glanceTemperature12–26°C (54–79°F) Species factsScientific nameNipponocypris temminckiiFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Common length10.0EnvironmentFreshwater; benthopelagicClimateTemperateDistributionAsia: Japan, the Korean Peninsula, and China. Occurrence in Taiwan doubtful.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec=600) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026