Millerichthys Costa [W. J. E. M.] 1995:18 Masc. Rivulus robustus Miller & Hubbs 1974. Type by original designation (also monotypic). •Valid as Millerichthys Costa 1995 -- (Costa 1998:79 [ref. 23792], Huber 1999:40 [ref. 23834], Lazara 2001:209 [ref. 25711], Costa in Reis et al. 2003:531 [ref. 27061], Costa 2004:2 [ref. 27874], Huber 2005:15 [ref. 28394], Scharpf 2007:11 [ref. 30398], Loureiro et al. 2018:6 [ref. 36240]). Current status: Valid as Millerichthys Costa 1995. Rivulidae: Rivulinae.