Aequidens (subgenus of Astronotus) Eigenmann [C. H.] & Bray [W. L.] 1894:616 Masc. Acara tetramerus Heckel 1840. Type by monotypy in subgenus. •Valid as Aequidens Eigenmann & Bray 1894 -- (Kullander 1986:338 [ref. 12439], Kullander & Nijssen 1989:134 [ref. 14136], Kullander 1995 [ref. 21877], Kullander 1998:494 [ref. 23855], Britski et al. 1999:148 [ref. 24147], Kullander in Reis et al. 2003:607 [ref. 27061], Allen et al. 2006:1437 [ref. 29081], Musilová et al. 2008:660 [ref. 29518], Kullander 2012:52 [ref. 31798], Kottelat 2013:373 [ref. 32989], Hernández-Acevedo et al. 2015:96 [ref. 34438], Oliveira et al. 2024:1 [ref. 41212]). Current status: Valid as Aequidens Eigenmann & Bray 1894. Cichlidae: Cichlinae.