Baryancistrus Rapp Py-Daniel [L. H.] 1989:245 Masc. Hypostomus niveatus Castelnau 1855. Type by original designation (also monotypic, one species mentioned). Both new genera in this work were proposed as (p. 235), "...herein preliminary established." Regarded as available, not falling under Art. 15.1 (taxa proposed conditionally after 1961 are unavailable; see Appendix A in Eschmeyer 1990 [ref. 20647]). •Valid as Baryancistrus Rapp Py-Daniel 1989 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2002:13 [ref. 27178], Fisch-Muller in Reis et al. 2003:379 [ref. 27061], Armbruster 2004:53, 59 [ref. 27644], Werneke et al. 2005:533 [ref. 28457], Ferraris 2007:226 [ref. 29155], Lujan et al. 2009:50 [ref. 30056], Rapp Py-Daniel et al. 2011:241[ref. 31383], de Oliveira et al. 2019:481 [ref. 36981]). Current status: Valid as Baryancistrus Rapp Py-Daniel 1989. Loricariidae: Hypostominae.