Microsternarchus Fernández-Yépez [A.] 1968:[4] Masc. Microsternarchus bilineatus Fernández-Yépez 1968. Type by original designation (also monotypic). On unnumbered p. 4. •Synonym of Hypopomus Gill 1864 -- (Mago-Leccia 1978:14, footnote [ref. 5489]). •Valid as Microsternarchus Fernández-Yépez 1968 -- (Mago-Leccia 1994:51 [ref. 21320], Albert & Campos-da-Paz 1998:426 [ref. 23853], Albert 2001:56 [ref. 25614], Albert & Crampton in Reis et al. 2003:495 [ref. 27061], de Santana & Crampton 2011:1155 [ref. 31643], Cox Fernandes et al. 2014:98 [ref. 33285], Cox Fernandes et al. 2015:213 [ref. 33927], Tagliacollo et al. 2016:29 [ref. 34087] in Microsternarchini, Ferraris et al. 2017:[25] [ref. 35236], Cox Fernandes & Williston 2017:105 [ref. 35647], Sousa et al. 2024:508 [ref. 41134]). Current status: Valid as Microsternarchus Fernández-Yépez 1968. Hypopomidae.