Melanorivulus (subgenus of Rivulus) Costa [W. J. E. M.] 2006:161 Masc. Rivulus punctatus Boulenger 1895. Type by original designation. Huber 2012 [ref. 32947] regards some taxa as synonyms of Rivulus based on a reappraisal of Rivulus with a morphological and molecular analysis. •Synonym of Rivulus Poey 1860 but a valid subgenus Melanorivulus as described -- (Costa 2007:194 [ref. 29337], Costa 2007:55 [ref. 29394], Costa 2008:313 [ref. 29388], Costa 2008:345 [ref. 29385], Costa 2008:351 [ref. 29384], Costa & Brasil 2008:82 [ref. 29541], Schindler & Etzel 2008:35 [ref. 29621], Costa 2010:369 [ref. 30690], Costa 2010:193 [ref. 30143], Costa & De Luca 2011:289 [ref. 31185], Valdesalici et al. 2011:105 [ref. 31381], Huber 2012:17 [ref. 32947]). •Valid as Melanorivulus Costa 2006 -- (Costa 2011:240 [ref. 31655], Bragança et al. 2012:51 [ref. 32067], Costa 2012:57 [ref. 32069], Costa 2012:211 [ref. 32292], Costa 2013:277 [ref. 33107], Costa et al. 2014:193 [ref. 33400], Nielsen & Pinto 2015:136 [ref. 33903], Costa et al. 2015:31 [ref. 33784], Nielsen et al. 2016:79 [ref. 34407], Costa 2016:107 [ref. 34900], Costa et al. 2016:267 [ref. 35405], Costa 2017:51 [ref. 35046], Volcan et al. 2017:82 [ref. 35156], Nielsen 2017:55 [ref. 35340], Deprá et al. 2017:111 [ref. 35503], Costa 2018:17 [ref. 35717], Loureiro et al. 2018:6 [ref. 36240], Volcan et al. 2018:263 [ref. 35895], Nielsen & Britzke 2019:35 [ref. 36525], Ywamoto et al. 2020:125 [ref. 37763]). Current status: Valid as Melanorivulus Costa 2006. Rivulidae: Rivulinae.