HomeFreshwater aquarium fishBarbs, danios & rasborasLambchop rasbora Lambchop rasbora (Trigonostigma espei) Scientific name: Trigonostigma espei Meinken, 1967 The Lambchop rasbora (Trigonostigma espei) is a freshwater fish of the family Cyprinidae that grows to about 2.5 cm (1 in). It is easy to keep and peaceful, suits community aquariums and needs a tank of at least 40 L (11 US gal), water at 23–28°C (73–82°F) and a pH of 5.0–7.0. Native range: ASIA; Thailand and Cambodia. Lambchop rasbora care at a glanceCare levelEasyTemperamentPeacefulCommunity tankExcellentAdult size2.5 cm (1 in)Minimum tank40 L (11 US gal)Temperature23–28°C (73–82°F)pH5.0–7.0Hardness3–15 dGH (54–268 ppm)DietOmnivore. Accepts flakes, frozen foods and live foods. BiologyLambchop-shaped black blotch on caudal peduncle.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTrigonostigma espeiFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length2.5EnvironmentFreshwater;; pH range: 6.0 - 6.5; dH range: ? - 12 benthopelagicClimateTropicalDistributionAsia: Thailand and Cambodia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More barbs, danios & rasborasGoldfishCarassius auratus auratusHypsibarbus wetmoreiDanio erythromicronBoraras brigittaeZebra danioDanio rerioWhite cloud mountain minnowTanichthys albonubesSee all barbs, danios & rasboras 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