A. Filippo Gonzalez Neves dos Santos, L. Neves dos Santos, and F. Gerson Araújo, “Digestive tract morphology of the Neotropical piscivorous fish Cichla kelberi (Perciformes: Cichlidae) introduced into an oligotrophic Brazilian reservoir”, Rev. Biol. Trop., vol. 59, no. 3, pp. 1245–1255, Sep. 2011.