britzkei, Melanorivulus Nielsen [D. T. B.] 2017:60, Figs. 4-5 [aqua, International Journal of Ichthyology v. 23 (no. 2); ref. 35340] Rio São Bento, headwaters of rio Braço Norte, Novo Progresso, Pará, Brazil, 9°12'35"S, 54°52'7"W. Holotype: MZUSP 121646. Paratypes: MZUSP. •Valid as Melanorivulus britzkei Nielsen 2017 -- (Nielsen & Britzke 2019:41 [ref. 36525]). Current status: Valid as Melanorivulus britzkei Nielsen 2017. Rivulidae: Rivulinae. Distribution: Rio Teles Pires, rio Tapajós basin, Pará, Brazil. Habitat: freshwater.