quintus, Trichomycterus Costa [W. J. E. M.] in Costa, Mattos, Amorim, Vilardo & Katz 2020:76, Figs. 3A-B, 4 [Zoologischer Anzeiger v. 288; ref. 38088] Lower Rio Marimbondo, near the confluence with Rio Preto, Rio Paraibuna drainage, Rio Paraíba do Sul basin, Município de Resende, Rio de Janeiro State, Brazil, 22°20'03"S, 44°32'30"W, elevation about 1000 meters. Holotype: UFRJ 12601. Paratypes: UFRJ. •Valid as Trichomycterus quintus Costa 2020 -- (Costa et al. 2022:10 [ref. 39248], Vilardo et al. 2023:5 [ref. 40643], Sarmento-Soares et al. 2024:558 [ref. 42662]). Current status: Valid as Trichomycterus quintus Costa 2020. Trichomycteridae: Trichomycterinae. Distribution: South America: Rio Preto drainage, Rio Paraíba do Sul basin, Rio de Janeiro State (Brazil). IUCN (2025): Not Assessed. Habitat: freshwater.