brevipinnis, Xenocara Regan [C. T.] 1904:257 [Transactions of the Zoological Society of London v. 17 (pt 3, no. 1); ref. 3621] Rio Grande do Sul, Brazil [Rio Camaquã basin]. Holotype (unique): BMNH 1891.3.16.76. Type catalog: Ferraris 2007:219 [ref. 29155]. •Valid as Ancistrus brevipinnis (Regan 1904) -- (Isbrücker 1980:67 [ref. 2303], Malabarba 1989:148 [ref. 14217], Muller 1989:894 [ref. 13512], Burgess 1989:436 [ref. 12860], Knaack 1999:152 [ref. 23874], Isbrücker 2001:25, 32 [ref. 25653], Isbrücker 2002:12 [ref. 27178], Fisch-Muller in Reis et al. 2003:374 [ref. 27061], Ferraris 2007:219 [ref. 29155], de Oliveira et al. 2015:81 [ref. 33869] as brevispinnis, Bertaco et al. 2016:417 [ref. 34561], Loureiro et al. 2023:112 [ref. 40506], Widholzer et al. 2024:10 [ref. 40848]). Current status: Valid as Ancistrus brevipinnis (Regan 1904). Loricariidae: Hypostominae. Distribution: South America: Laguna dos Patos basin (Brazil and Uruguay). Habitat: freshwater.