nuptialis, Knodus Menezes [N. A.] & Marinho [M. M. F.] 2019:3, Figs. 1-8 [PLoS ONE v. 14 (no. 7): e0217915; ref. 36822] Upstream dam in Rio 13 de Maio at small hydroelectric central Salto do Três de Maio, tributary of Rio Curuá, Rio Xingu basin, Altamira, Pará, Brazil, 8°44'59"S, 55°1'58.8"W. Holotype: MZUSP 124829. Paratypes: INPA, MCP, MNRJ, MZUSP. •Valid as Knodus nuptialis Menezes & Marinho 2019 -- (Deprá et al. 2021:24 [ref. 38180], Aguiar et al. 2022:19 [ref. 39329]). Current status: Valid as Knodus nuptialis Menezes & Marinho 2019. Characidae: Stevardiinae. Distribution: South America: Rio Curuá drainage, Rio Xingu basin, Pará, Brazil. Habitat: freshwater.