Mystacoleucus lepturus

{{Short description|Species of fish}}

{{Speciesbox

| image =

| status = VU

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Jenkins, A. |author2=Kullander, F.F. |author2-link= Fang Fang Kullander |name-list-style=& |author3=Tan, H.H. |author3-link= Heok Hui Tan |year=2009 |title=Mystacoleucus lepturus |page=e.T169544A6645213 |doi=10.2305/IUCN.UK.2009-2.RLTS.T169544A6645213.en |access-date=15 December 2024}}

| taxon = Mystacoleucus lepturus

| authority = S. Y. Huang, 1979

}}

Mystacoleucus lepturus is a species of freshwater ray-finned fish belonging to the family Cyprinidae, the family which includes the carps, barbs, minnows and related fishes.{{Cof genus|genus=Mystacoleucus|access-date=14 December 2024}} It inhabits the Mekong and has a maximum length of {{convert|9.2|cm|in}}.{{Fishbase|Mystacoleucus|lepturus|month=October|year=2024}}