HomeFreshwater aquarium fishBarbs, danios & rasborasClown rasbora Clown rasbora (Rasbora kalochroma) Scientific name: Rasbora kalochroma Bleeker, 1851 The Clown rasbora (Rasbora kalochroma) is a freshwater fish of the family Cyprinidae that grows to about 9 cm (3.5 in). It is easy to keep and peaceful, suits community aquariums and needs a tank of at least 110 L (29 US gal), water at 24–29°C (75–84°F) and a pH of 5.5–7.0. Native range: S.E. Asian Islands, streams and rivers in Borneo and Sumatra. Clown rasbora care at a glanceCare levelEasyTemperamentPeacefulCommunity tankGoodAdult size9 cm (3.5 in)Minimum tank110 L (29 US gal)Temperature24–29°C (75–84°F)pH5.5–7.0Hardness2–10 dGH (36–178 ppm)DietOmnivore. Accepts flakes, frozen foods and live foods. Species factsScientific nameRasbora kalochromaFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length10.0EnvironmentFreshwater;; dH range: 10 - ? benthopelagicClimateTropicalDistributionAsia: Malay Peninsula and Indonesia (Borneo and Sumatra).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More barbs, danios & rasborasBrilliant rasboraRasbora einthoveniiGreater scissortailRasbora caudimaculataSundadanio axelrodiPearl danioDanio albolineatusGiant danioDevario aequipinnatusBlackline rasboraRasbora borapetensisSee all barbs, danios & rasboras Can it live with...?Clown rasbora and Arulius barbClown rasbora and Black ghostClown rasbora and Black sharkminnowClown rasbora and Blackbarred limiaClown rasbora and Blackline rasboraClown rasbora and Bleeding-heart tetraClown rasbora and Bloodfin tetraClown rasbora and Bluespotted corydorasClown rasbora and Brilliant rasboraClown rasbora and Butterfly splitfinClown rasbora and Chinese suckerClown rasbora and Clown barbClown rasbora and Clown loachClown rasbora and Coppernose barbClown rasbora and Crescent bettaClown rasbora and Dwarf botiaClown rasbora and Dwarf rainbowfishClown rasbora and Dwarf rasboraClown rasbora and Eel LoachClown rasbora and Forktail rainbowfishClown rasbora and Gangetic leaffishClown rasbora and Garnet tetraClown rasbora and Giant danioClown rasbora and Glass catfishClown rasbora and Glowlight tetraClown rasbora and Goldeneye cichlidClown rasbora and Greater scissortailClown rasbora and Harlequin rasboraClown rasbora and Head-and-taillight tetraClown rasbora and Horseface loach SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026