Typová lokalita
Stream near Vila Cajari, upper Cajari River drainage, lower Amazon River basin, 0°34'23"S, 52°16'23"W, Estado do Amapá, northern Brazil, elevation 120 meters.
Původní popis
Costa, W. J. E. M. & De Luca, A. C. 2011. Rivularus cajariensis, a new killifish from the Guiana Shield of Brazil, eastern Amazon (Cyprinodontiformes: Rivulidae). Ichthyological Exploration of Freshwaters v. 21 (no. 4) [Dec. 2010]: 353-358.
Použitá literatura
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds). 2024. Eschmeyer's catalog of fishes: Genera, species, references. World Wide Web.