Epactionotus Reis [R. E.] & Schaefer [S. A.] 1998:4 Masc. Epactionotus bilineatus Reis & Schaefer 1998. Type by original designation. •Synonym of Hisonotus Eigenmann & Eigenmann 1889 -- (Roxo et al. 2019:161 [ref. 36538]). •Valid as Epactionotus Leis & Schaefer 1998 -- (Isbrücker 2002:15 [ref. 27178], Schaefer in Reis et al. 2003:322 [ref. 27061], Azpelicueta et al. 2004:89 [ref. 28029], Ferraris 2007:235 [ref. 29155],, Martins & Langeani 2011:66 [ref. 31235], Reis et al. 2012:10 [ref. 31863], Bertaco et al. 2016:417 [ref. 34561], Delapieve et al. 2020:[1] [ref. 37840]). Current status: Valid as Epactionotus Reis & Schaefer 1998. Loricariidae: Hypoptopomatinae.