uruguayensis, Hypostomus Reis [R. E.], Weber [C.] & Malabarba [L. R.] 1990:760, Figs. 1, 29-31 [Revue Suisse de Zoologie v. 97 (no. 3); ref. 16139] Rio Uruguay at "Rancho da Amizade," São Borja, Rio Grande do Sul, Brazil. Holotype: MCP 11874. Paratypes: MCP 09252 (1), 11797 (1), 11858 (2), 12309 (1), 12953 (2), 11973 (3), 12648 (1), 12678 (4), 12801 (1); MHNG 2430.73 (2), 2448.41 (1); MZUSP 40259 (1); USNM 303682 (1). Type catalog: Ferraris 2007:261 [ref. 29155]. •Valid as Hypostomus uruguayensis Reis, Weber & Malabarba 1990 -- (Burgess & Finley 1996:169 [ref. 22901], Isbrücker 2001:28 [ref. 25653], Isbrücker 2002:20 [ref. 27178], Weber in Reis et al. 2003:363 [ref. 27061], López et al. 2003:52 [ref. 27366], Armbruster 2004:80 [ref. 27644], Menni 2004:81 [ref. 28131], Ferraris 2007:261 [ref. 29155], Cardoso et al. 2012:77 [ref. 32154], Litz & Koerber 2014:26 [ref. 33622], Mirande & Koerber 2015:43 [ref. 35117], Cardoso et al. 2016:22 [ref. 34373], Bertaco et al. 2016:419 [ref. 34561], Nión et al. 2016:32 [ref. 35565], Zawadzki et al. 2018:[17] [ref. 35944], Lustosa-Costa et al. 2021:195 [ref. 38431], Loureiro et al. 2023:108 [ref. 40506], Oliveira 2023:[2] [ref. 41218]). Current status: Valid as Hypostomus uruguayensis Reis, Weber & Malabarba 1990. Loricariidae: Hypostominae. Distribution: South America: Uruguay River basin (Argentina, Bolivia, Brazil and Uruguay). Habitat: freshwater.