Typový druh
Simpsonichthys constanciae Myers, 1942.
Původní popis
Costa, W. J. E. M. 2006. Descriptive morphology and phylogenetic relationships among species of the neotropical annual killifish genera Nematolebias and Simpsonichthys (Cyprinodontiformes: Aplocheiloidei: Rivulidae). Neotropical Ichthyology v. 4 (no. 1): 1-26.
Použitá literatura
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds). 2026. Eschmeyer's catalog of fishes: Genera, species, references. World Wide Web.