ringueleti, Hisonotus Aquino [A. E.], Schaefer [S. A.] & Miquelarena [A. M.] 2001:3, Fig. 1 [American Museum Novitates No. 3333; ref. 25673] Creek at kilometer 18 of route from Santana do Livramento, Brazil and Rivera, Uruguay [actually contiguous towns], Quaraí River system, Rivera state, Uruguay [actual: headwaters of Quarai drainage, Brazil of Uruguay]. Holotype: CFA-IC 10886 [ex ILPLA 886]. Paratypes: CFA-IC 10883 [ex ILPLA 883] (99); AMNH 230702 (8, 3 c&s), ANSP 177878 (4, 1 c&s), FMNH 108806 (4), MCP 26154 (4, 1 c&s), MLP 9536 (4), MZUSP 62788 (3), ULPLA 883 (95). USNM 362665 (4). Type catalog: Ferraris 2007:249 [ref. 29155], Koerber 2007:2 [ref. 29776], Miquelarena & Nadalin 2014:12 [ref. 33466], Bogan et al. 2019:18 [ref. 37088]. See Carvalho & Reis 2009:34 [ref. 30193] for comments on the type locality. •Valid as Hisonotus ringueleti Aquino, Schaefer & Miquelarena 2001 -- (Isbrücker 2001:28 [ref. 25653], Isbrücker 2002:18 [ref. 27178], Schaefer in Reis et al. 2003:323 [ref. 27061], López et al. 2003:44 [ref. 27366], Almirón & Azpelicueta 2006:87 [ref. 28713], Casciotta et al. 2006:150 [ref. 28758], Azpelicueta & Almirón 2007:596 [ref. 29353], Britski & Garavello 2007:414 [ref. 29429], Ferraris 2007:249 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127], Carvalho & Reis 2009:31 [ref. 30193], Garvalho & Reis 2011:35 [ref. 31240], Litz & Koerber 2014:24 [ref. 33622], Roxo et al. 2015:139 [ref. 33763], Zawadzki et al. 2016:381 [ref. 34367], Roxo et al. 2016:236 [ref. 34426], Bertaco et al. 2016:418 [ref. 34561], Nión et al. 2016:31 [ref. 35565], Calegari et al. 2017:244 [ref. 35203], Roxo et al. 2018:[12] [ref. 35900], Loureiro et al. 2023:118 [ref. 40506]). Current status: Valid as Hisonotus ringueleti Aquino, Schaefer & Miquelarena 2001. Loricariidae: Hypoptopomatinae. Distribution: South America: middle Uruguay River basin (Uruguay). Habitat: freshwater.