Atlantirivulus (subgenus of Rivulus) Costa [W. J. E. M.] 2008:46 Masc. Rivulus santensis Köhler 1906. 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 Atlantirivulus -- (Costa 2008:46 [ref. 29622], Huber 2012:17 [ref. 32947]). •Valid as Atlantirivulus Costa 2008 -- (Costa 2011:243 [ref. 31655], Costa 2014:9 [ref. 33307], Bertaco et al. 2016:423 [ref. 34561], Loureiro et al. 2018:6 [ref. 36240], Volcan et al. 2024:92 [ref. 41345]). Current status: Valid as Atlantirivulus Costa 2008. Rivulidae: Rivulinae.