serratus, Astyanax Garavello [J. C.] & Sampaio [F. A. A.] 2010:858, Fig. 7 [Brazilian Journal of Biology v. 70 (no. 3); ref. 31053] Rio da Várzea, Agudos do Sul, Paraná, Brazil. Holotype: MHNCI 12346. Paratypes: many at LISDEBE, MHNCI, MZUSP. •Valid as 'Astyanax' serratus Garavello & Sampaio 2010 -- (Reis et al. 2020:458 [ref. 38364]). •Valid as Astyanax serratus Garavello & Sampaio 2010 -- (Ingenito & Duboc 2014:289 [ref. 33374], da Graça et al. 2017:13 [ref. 35556], Salgado 2021:12 [ref. 38719]). •Valid as Psalidodon -- (Melo et al. 2024:30 [ref. 41541] in Acestrorhamphinae). Current status: Valid as Psalidodon serratus (Garavello & Sampaio 2010). Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: Iguaçu River basin (Brazil). Habitat: freshwater.