HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsThinlip barb Thinlip barb (Probarbus labeaminor) Scientific name: Probarbus labeaminor Roberts, 1992 The Thinlip barb (Probarbus labeaminor) is a freshwater fish of the family Cyprinidae. Native range: Asia, endemic to the Mekong River. BiologyDorsal soft rays (total): 13; Anal soft rays: 8 - 9; Vertebrae: 36 - 37. Differs from its congeners in having larger (fewer) scales, scale rows between lateral line scale row and pelvic fin 3, fewer vertebrae, weak stripes, only three stripes between lateral line scale row and pelvic fin rather than four, and free posterior margin of left and right sides of lower lip widely separated at midline. Barbels relatively long.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameProbarbus labeaminorFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length150EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAsia: endemic to the Mekong River.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceVery Low, minimum population doubling time more than 14 years (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