tupinikin, Xenurolebias Gomes [B. P.], Sarmento-Soares [L. M.], Martins-Pinheiro [R. F.] & Leite [G. R.] 2025:4, Figs. 1-3 [Diversity v. 17 (Art. 644); ref. 42404] Swamp area on Sertão do Riacho stream, Rio Riacho basin, Aracruz, Espírito Santo State, Brazil, −19.73992S, −40.04357 W. Holotype: MNRJ 56004. Paratypes: MNRJ 56005 (9). •Valid as Xenurolebias tupinikin Gomes, Sarmento-Soares, Martins-Pinheiro & Leite 2025. Current status: Valid as Xenurolebias tupinikin Gomes, Sarmento-Soares, Martins-Pinheiro & Leite 2025. Rivulidae: Cynolebiinae. Distribution: South America: Sertão do Riacho and Caipora streams, Rio Riacho drainage, north-central Espirito Santo State, Brazil. Habitat: freshwater.