anus, Loricaria Valenciennes [A.] 1835:Pl. 6 (fig. 1) [Voyage dans l'Amérique méridionale; ref. 20720] Río de la Plata near Buenos Aires, Argentina. Holotype (unique): MNHN A-9456 (396 mm SL) or A-9455. Type catalog: Bertin & Estève 1950:74 [ref. 19575] with syntypes, Ferraris 2007:269 [ref. 29155]. Name available from plate, figure caption in Valenciennes 1847:8 [ref. 5010]. Pl. 6 was published in 1835. Description appeared in Valenciennes 1840:470 [ref. 1008]. Lectotype selected by Isbrücker 1979:113 [ref. 2302], but technically the figured specimen is the unique holotype if identifiable. •Valid as Loricariichthys anus (Valenciennes 1835) -- (Isbrücker 1980:125 [ref. 2303], Isbrücker 1981:87 [ref. 5522], Malabarba 1989:154 [ref. 14217], Burgess 1989:444 [ref. 12860], Gómez & Chebez 1996:62 [ref. 23791], Sverlij et al. 1998:68 [ref. 27632] dated 1840, Reis & Pereira 2000:1033 [ref. 25021], Isbrücker 2001:29, 20 [ref. 25653], Isbrücker 2002:23 [ref. 27178], Ferraris in Reis et al. 2003:338 [ref. 27061], López et al. 2003:46 [ref. 27366], Menni 2004:81 [ref. 28131], Ferraris 2007:269 [ref. 29155], Litz & Koerber 2014:26 [ref. 33622], Mirande & Koerber 2015:45 [ref. 35117], Bertaco et al. 2016:419 [ref. 34561], Nión et al. 2016:31 [ref. 35565] dated 1836), Loureiro et al. 2023:96 [ref. 40506]. Current status: Valid as Loricariichthys anus (Valenciennes 1835). Loricariidae: Loricariinae. Distribution: South America: coastal rivers of southern Brazil, Uruguay, and lower Paraná River basins (Argentina, Brazil and Uruguay). Habitat: freshwater.