circummontanus, Phalloceros Souto-Santos [I. C. A.], Mejia [E.], Arcila [D.] & Buckup [P. A.] 2025:5, Figs. 1A, 2A, 4 [Neotropical Ichthyology v. 23 (no. 1): e2400129; ref. 42058] Small stream on the left bank of the rio Pardo, on the road from Caldas to Fim dos Campos, 400 m east of the road to São Pedro de Caldas, rio Grande drainage, upper rio Paraná basin, Caldas, Minas Gerais, Brazil, 21°54'45"S, 46°19'30"W. Holotype: MNRJ 55366. Paratypes: MCP, MNRJ. Plus additional non-type material. •Valid Phalloceros circummontanus Souto-Santos, Mejia, Arcila & Buckup 2025. Current status: Valid as Phalloceros circummontanus Souto-Santos, Mejia, Arcila & Buckup 2025. Poeciliidae: Poeciliinae. Distribution: South America: Paraná and upper Paraíba do Sul River basins, and coastal river drainages, southeastern Brazil. Habitat: freshwater.