Acestridium triplax

{{Short description|Species of fish}}

{{Speciesbox

|image =

|genus = Acestridium

|species = triplax

|authority = M. S. Rodriguez & R. E. dos Reis, 2007

}}

Acestridium triplax is a species of armored catfish in the genus Acestridium.{{cite web|url=https://www.fishbase.se/summary/64041|title=Acestridium triplax Rodríguez & Reis, 2007|publisher=FishBase|accessdate=May 10, 2019}} It is native to the Amazon River in Brazil.