thayeri, Leporinus Borodin [N. A.] 1929:273, Pl. 2 [Memoirs of the Museum of Comparative Zoology v. 50 (no. 3); ref. 527] Rio Parahyba, Brazil. Holotype: MCZ 20364. Paratypes: MCZ 94492 [ex MCZ 20364a] (1), 20367 (5), 20414 (1). •Synonym of Leporinus mormyrops Steindachner 1875 -- (Johannes 1999:16 [ref. 24121]). •Valid as Leporinus thayeri Borodin 1929 -- (Garavello & Britski in Reis et al. 2003:78 [ref. 27061]). •Valid as Hypomasticus thayeri (Borodin 1929) -- (Sidlauskas & Vari 2008:74 [ref. 29786], Birindelli et al. 2013:464 [ref. 32924], Birindelli et al. 2020:423 [ref. 37635]). Current status: Valid as Hypomasticus thayeri (Borodin 1929). Anostomidae. Distribution: South America: coastal drainages in Paraíba do Sul to Mucuri River basins, Brazil. Habitat: freshwater.