kirovskyi, Rivulus Costa [W. J. E. M.] 2004:10, Fig. 1 [Neotropical Ichthyology v. 2 (no. 1); ref. 27656] Temporary pools near igarapé Acará, lower rio Negro drainage, rio Amazonas basin, about 3°00'S, 60°30'W, Reserva Ducke, Manaus, Estado do Amazonas, Brazil, elevation 90 meters. Holotype: UFRJ 5935. Paratypes: INPA 1850 (2); UFRJ 5936 (1, c&s), 5937 (1, c&s), 5938-39 (1, 2). •Valid as Rivulus kirovskyi Costa 2004 -- (Costa 2004:2 [ref. 27923], Costa 2006:157 [ref. 28875] in subgenus Owiyeye, Schindler & Valdesalici 2011:109 [ref. 31382], Vermeulen 2023:109 [ref. 40177]). •Valid as Laimosemion kirovskyi (Costa 2004) -- (Costa 2011:239 [ref. 31655], Costa & Bragança 2013:95 [ref. 32797], Costa & Lazzarotto 2014:372 [ref. 33247], Valdesalici 2016:279 [ref. 34270]). Current status: Valid as Laimosemion kirovskyi (Costa 2004). Rivulidae: Rivulinae. Distribution: Floodplains of igarapé Acará, Amazon River basin, northern Brazil. Habitat: freshwater.