Typový druh
Placogobio nahangensis Nguyen, 2001.
Původní popis
Nguyen, V. H. & Ngo, S. V. 2002. Ca nuoc ngot Viet Nam. Tap I. Ho ca chep (Cyprinidae). (Freshwater fishes of Vietnam. Volume I. Family Cyprinidae). Agricultural Publishing House, Hanoi. v. 1: 1-622.
Použitá literatura
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds). 2025. Eschmeyer's catalog of fishes: Genera, species, references. World Wide Web.