amambaiensis, Melanorivulus Volcan [M. V.], Severo-Neto [F.] & Lanés [L. E. K.] 2018:272, Figs. 8-9 [Zoosystematics and Evolution v. 94 (no. 2); ref. 35895] First order stream of Rio Amambaí, margin of BR 487 highway, near of municipality of Naviraí, Mato Grosso do Sul state, Brazil, 22°57'11"S, 54°26'52"W, elevation 332 meters. Holotype: MCP 53150. Paratypes: MCP, ZUFMS. •Valid as Melanorivulus amambaiensis Volcan, Severo-Neto & Lanés 2018. Current status: Valid as Melanorivulus amambaiensis Volcan, Severo-Neto & Lanés 2018. Rivulidae: Rivulinae. Distribution: South America: Rio Amambaí drainage, Rio Paraná basin, Mato Grosso do Sul state, Brazil. Habitat: freshwater.