ornatus, Rivulus Garman [S.] 1895:139 [Memoirs of the Museum of Comparative Zoology v. 19 (pt 1); ref. 1538] Lago Aleixo, Codajás, Silves, Amazonas, Brazil. Lectotype: MCZ 6266. Paralectotypes: MCZ 6336 (1), 6854 (4). Lectotype selected in Huber 1992:347 [ref. 20639]. Type locality from Costa & Lazzarotto 2008:129 [ref. 29870]. •Synonym of Rivulus obscurus Garman 1895 -- (Hrbek et al. 2004:569 [ref. 27910]). •Valid as Rivulus ornatus Garman 1895 -- (Ortega & Vari 1986:19 [ref. 9708], Huber 1992:347 [ref. 20639], Lazara 2001:282 [ref. 25711], Costa in Reis et al. 2003:538 [ref. 27061], Costa 2003:176 [ref. 27578], Costa 2004:4 [ref. 27570], Costa 2004:11 [ref. 27656], Costa 2004:2 [ref. 27923], Costa 2006:147 [ref. 28875] in subgenus Anablepsoides, Costa & Lazzarotto 2008:129 [ref. 29870], Schindler & Valdesalici 2011:113 [ref. 31382], Huber 2021:9 [ref. 38709]). •Valid as Anablepsoides ornatus (Garman 1895) -- (Costa 2011:243 [ref. 31655], DoNascimiento et al. 2017:101 [ref. 35633], Nielsen & Veiga 2021:10 [ref. 38269], Meza-Vargas et al. 2021:27 [ref. 39298]). Current status: Valid as Anablepsoides ornatus (Garman 1895). Rivulidae: Rivulinae. Distribution: South America: Amazon River basin (Brazil and Peru). Habitat: freshwater.