tetramerus, Pimelodus Ribeiro [F. R. V.] & Lucena [C. A. S. de] 2006:322, Figs. 1-3 [Iheringia, Série Zoologia (Porto Alegre) v. 96 (no. 3); ref. 28962] Rio Palmeiras, drenagem do rio Tocantins, Ponte Alta do Bom Jesus, 12°15'43"S, 46°53'36"W, Tocantins, Brazil. Holotype: MZUSP 85809. Paratypes: MZUSP 34514 (2), 24620 (10), 35828 (2), 40439 (2), 54085 (2), 62812 (1), 63045 (3), 83811 (1), 83813 (2 c&s), 84004 (3), 85810 (1); MCP 35830 (2) •Valid as Pimelodus tetramerus Ribeiro & Lucena 2006 -- (Ribeiro et al. 2008:464 [ref. 29855], Ribeiro et al. 2011:128 [ref. 31238], Lucinda et al. 2016:344 [ref. 34916], Costa e Silva et al. 2018:106 [ref. 35734], Silvano et al. 2020:300 [ref. 38135], Grant 2021:94 [ref. 38702] as cf. tetramerus, Meza-Vargas et al. 2021:23 [ref. 39298]). Current status: Valid as Pimelodus tetramerus Ribeiro & Lucena 2006. Pimelodidae. Distribution: South America: Tapajós and Tocantins rivers (Brazil); Peru. Habitat: freshwater.