Mattos, J.L.O. & Costa, W.J.E.M. (2018): Three new species of the ‚Geophagus‘ brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). Zoosystematics and Evolution, 94 (2): 325–337. DOI:10.3897/zse.94.22685.
Hernán López-Fernándeza, Kirk O. Winemillerc, & Rodney L. Honeycutt: Multilocus phylogeny and rapid radiations in Neotropical cichlid fishes (Perciformes: Cichlidae: Cichlinae). Molecular Phylogenetics and Evolution Volume 55, Issue 3, Juni 2010, S. 1070–1086 doi:10.1016/j.ympev.2010.02.020
A.M. Ximenes, Bittencourt, P.S., Machado, V.N., Hrbek, T. & Farias, I.P. (2021): Mapping the hidden diversity of the Geophagus sensu stricto species group (Cichlidae: Geophagini) from the Amazon basin. PeerJ, 9: e12443. doi: 10.7717/peerj.12443.
Junior Chuctaya, Pedro Nitschke, Marcelo C. Andrade, Juliana Wingert, Luiz R. Malabarba: A new species of Geophagus (Teleostei: Cichlidae): naming a cichlid species widely known in the Aquarium hobby as “Geophagus sp. Tapajos Red head”. Journal of Fish Biology, September 2022. doi: 10.1111/jfb.15207.
Leandro Araujo Argolo, Hernán López-Fernández, Henrique Batalha-Filhoa, Paulo Roberto, Antunes de Mello Affonso: Unraveling the systematics and evolution of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species complex. Molecular Phylogenetics and Evolution, Mai 2020, doi: 10.1016/j.ympev.2020.106855.
C. E. de Assis, Dergam, J. A., Cunha, A. F., Machado, V. N., Hrbek, T., Vicente, N. M. d. F., de Queiroz, V., & Henschel, E. (2026). A new endemic pearl cichlid of the ‘𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠’ 𝑏𝑟𝑎𝑠𝑖𝑙𝑖𝑒𝑛𝑠𝑖𝑠 (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil. Journal of Fish Biology, 1–14. doi: 10.1111/jfb.70324
