Probarbus labeamajor

{{Short description|Species of fish}}

{{Speciesbox

| image = Thicklip burb.jpg

| image_caption = At Aqua Totto Gifu, Japan

| status = EN

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Baird, I. |date=2011 |title=Probarbus labeamajor |volume=2011 |page=e.T18183A7744836 |doi=10.2305/IUCN.UK.2011-1.RLTS.T18183A7744836.en |access-date=15 November 2021}}

| taxon = Probarbus labeamajor

| authority = T. R. Roberts, 1992

}}

Probarbus labeamajor, the thicklip barb, is a species of freshawater ray-finned fish in the family Cyprinidae, the family which includes the carps, barbs, minnows and related fishes.{{Cof genus|genus=Probarbus|access-date=31 December 2024}} This species is endmeic to the Mekong mainstream and large tributaries in Laos, Cambodia and Thailand.