barbatus, Ancistrus Steindachner [F.] 1911:376 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 48 (no. 17) (for 6 July 1911); ref. 14817] Rio Tapajós at Vila Braga, Brazil. Appeared as "Ancistrus barbatus (C.V.) Reg." Apparently not the same as Hypostomus barbatus Valenciennes 1840. Name proposed invertently by Isbrücker 1980 according to Fisch-Muller in Reis et al. 2003:394 [ref. 27061]. •Valid as Pterygoplichthys barbatus (Steindachner 1911) -- (Isbrücker 1980:40 [ref. 2303], Burgess 1989:433 [ref. 12860]). •In the synonymy of Pseudancistrus barbatus (Valenciennes 1840) -- (Fisch-Muller in Reis et al. 2003:394 [ref. 27061]). Current status: Synonym of Pseudancistrus barbatus (Valenciennes 1840). Loricariidae: Hypostominae. Habitat: freshwater.