McMahan, Caleb D. & A.D. Geheber, K.R. Piller. 2010. "Molecular Systematics of the Enigmatic Middle American Genus Vieja (Teleostei: Cichlidae)". Molecular Phylogenetics and Evolution. Article in Press (ffm02683)
McMahan, Caleb D.. 2011. "Paraneetroplus synspilus is a junior synonym of Paraneetroplus melanurus (Teleostei: Cichlidae)". Zootaxa. (2833):1-14 (ffm03297)
McMahan, Caleb D. & M.P. Davis, O. Domínguez-Domínguez, F.J. García-de-León, I. Doadrio, K.R. Piller. 2012. "From the mountains to the sea: phylogeography and cryptic diversity within the mountain mullet, Agonostomus monticola (Teleostei: Mugilidae)". Journal of Biogeography. 2015(40):894–904 (ffm00670) (abstract)
McMahan, Caleb D. & W.A. Matamoros, F.S. Álvarez-Calderón, W.Y. Henríquez, H.M. Recino, P. Chakrabarty, E. Barraza, N. Herrera. 2013. "Checklist of the Inland Fishes of El Salvador". Zootaxa. 3608(6):440–456 (ffm05318) (abstract)
McMahan, Caleb D. & W.A. Matamoros, K.R. Piller, P. Chakrabarty. 2015. "Taxonomy and systematics of the herichthyins (Cichlidae: Tribe Heroini), with the description of eight new Middle American Genera". Zootaxa. 3999(2):211-234 (ffm06794) (abstract)
McMahan, Caleb D. & Wilfredo A. Matamoros, Diego J. Elías, Kyle R. Piller. 2019. "Species or population? Systematic status of Vieja coatlicue (Teleostei: Cichlidae)". Neotropical Ichthyology. 17(2),. DOI: 10.1590/1982-0224-20190004 (ffm09368)