microstoma, Pimelodus Steindachner [F.] 1877:604 [46] [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4224] Irisanga, rio Mogi-Guaçu drainage, upper rio Paraná, São Paulo State, Brazil. Syntypes: (several) NMW 45823-24 (1, 2). See Ribeiro & Lucena 2007:77 [ref. 29174] for comments on the type locality. •Valid as Pimelodus microstoma Steindachner 1877 -- (Lundberg & Littmann in Reis et al. 2003:440 [ref. 27061], Ribeiro & Lucena 2006:326 [ref. 28962], Ribeiro & Lucena 2007:75 [ref. 29174], Azpelicueta et al. 2008:155 [ref. 29736], Ribeiro & Lucena 2010:277 [ref. 30865], Ribeiro et al. 2011:128 [ref. 31238], Costa e Silva et al. 2018:105 [ref. 35734], Reis et al. 2020:469 [ref. 38364], Brandão et al. 2022:187 [ref. 40464]). Current status: Valid as Pimelodus microstoma Steindachner 1877. Pimelodidae. Distribution: South America: upper Paraná River basin (São Paulo, Brazil). Habitat: freshwater.