Laimosemion (subgenus of Rivulus) Huber [J. H.] 1999:49 Neut. Rivulus geayi Vaillant 1899. 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 -- (Costa in Reis et al. 2003:534 [ref. 27061], Huber 2012:17 [ref. 32947]). •Synonym of Rivulus Poey 1860, but a valid subgenus Laimosemion -- (Lazara 2001:269 [ref. 25711], Costa 2006:152 [ref. 28875], Vermeulen et al. 2013:187 [ref. 32954]). •Valid as Laimosemion Huber 1999 -- (Costa 2011:239 [ref. 31655], Vermeulen et al. 2012:182 [ref. 32253], Costa & Bragança 2013:93 [ref. 32797], Costa & Lazzarotto 2014:371 [ref. 33247], Valdesalici & García Gil 2015:166 [ref. 34010], Valdesalici 2016:279 [ref. 34270], Valdesalici & Nielsen 2017:97 [ref. 35496], Loureiro et al. 2018:6 [ref. 36240], Nielsen et al. 2022:37 [ref. 39106]). Current status: Valid as Laimosemion Huber 1999. Rivulidae: Rivulinae.