muelleri, Pimelodus Günther [A.] 1864:119 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Río Capim, Para, Brazil. Lectotype: BMNH 1849.11.8.101 (133.6 mm SL). Paralectotypes: (2) BMNH 2005.9.5.2 (1). Type catalog: Ferraris 2007:199 [ref. 29155]. Originally as mülleri. Lectotype selected by Silfvergrip 1996:23 [ref. 22347]. •Valid as Rhamdia muelleri (Günther 1864) -- (Silfvergrip 1996:90 [ref. 22347], Bockmann & Guazzelli in Reis et al. 2003:423 [ref. 27061], Ferraris 2007:199 [ref. 29155], Barriga Salazar 2014:114 [ref. 35745], Angrizani & Malabarba 2018:44 [ref. 35829], Urbano-Bonilla et al. 2018:78 [ref. 35773], Taphorn et al. 2022:49 [ref. 41297]). Current status: Valid as Rhamdia muelleri (Günther 1864). Heptapteridae: Rhamdiinae. Distribution: South America: Amazon basin and orinoco basin (Brazil and Guyana). Habitat: freshwater.