Taxonomy & naming
Valenciennes described the species in 1842 in Cuvier and Valenciennes's Histoire naturelle des poissons, from Jakarta. It was first placed in another genus, so the authority is in parentheses. Labiobarbus is in the family Cyprinidae. No widely used English common name is recorded.
Morphology
An elongate, silvery cyprinid with a fleshy lip. FishBase gives a maximum of 12 in SL for males and unsexed fish.
Habitat
FishBase records it from the Mekong, Salween, Chao Phraya and Xe Bangfai basins and from the Malay Peninsula, Sumatra, Java and Borneo. It is potamodromous, moving within river systems, and lives from midwater to the bottom in rivers and streams. It enters flooded fields in the wet season.
Feeding
FishBase lists phytoplankton, periphyton, benthic algae, zooplankton, detritus and insect larvae.
Mating
Mating behaviour is not described.
Breeding
Reproduction is not described, and no captive spawning has been documented.
In the aquarium
FishBase gives 75–79 °F and no pH or hardness range. A migratory, 12 in river fish needs a long tank with current and open swimming room, kept in a group, with vegetable foods and algae in the diet.
Conservation
The IUCN Red List category is Least Concern, assessed on 6 April 2020. Specific threats are not described.