HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsLight's bitterling Light's bitterling (Rhodeus lighti) Scientific name: Rhodeus lighti Wu, 1931 The Light's bitterling (Rhodeus lighti) is a freshwater fish of the family Cyprinidae. In the aquarium it needs water at 10–25°C (50–77°F). Native range: Former USSR and Asia, Amur basin to southern China. Light's bitterling care at a glanceTemperature10–25°C (50–77°F) Species factsScientific nameRhodeus lightiFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length5.2EnvironmentFreshwater; benthopelagicClimateTemperateDistributionFormer USSR and Asia: Amur basin to southern China.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, 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