Cavalcante de Oliveira, J., J. Alves de Oliveira, and D.P.C. Rossato (2019). First record of Apistogrammoides pucallpaensis Meinken, 1965 (Perciformes, Cichlidae) for Brazil, in addition to fecundity information. Acta Limnol. Bras. 31. doi:10.1590/s2179-975x4218
López-Fernández, H., R.L. Honeycutt, M.L.J. Stiassny, and K.O. Winemiller (2005). Morphology, molecules, and character congruence in the phylogeny of South American geophagine cichlids (Perciformes, Labroidei). Zoologica Scripta 34(6): 627–651. doi:10.1111/j.1463-6409.2005.00209.x