Below you will find a list of my publications. For PDFs please visit my ResearchGate profile.

Ballen, Gustavo A. (2018). Tooth row variation in tadpoles of Dendropsophus labialis (Anura: Hylidae: Dendropsophini) and the evolution of oral morphology in the genus. Caldasia 40(2):216-231

Urbano-Bonilla, A., Ballen, Gustavo A., Herrera-R, G. A., Zamudio, J., Herrera-Collazos, E. E., DoNascimiento, C., … Maldonado-Ocampo, J. A. (2018). Fishes of the Cusiana River (Meta River basin, Colombia), with an identification key to its species. ZooKeys, 733, 65–97.

Ballen, Gustavo A., Pastana, M. N. L., & Peixoto, L. A. W. (2016). A new species of Farlowella (Siluriformes: Loricariidae) of the F. nattereri species-group from the rio Xingu basin, Mato Grosso, Brazil, with comments on Farlowella jauruensis, a poorly-known species from the upper rio Paraguai basin. Neotropical Ichthyology, 14(3), e160046

Ballen, Gustavo A.., Urbano-Bonilla, A., & Maldonado-Ocampo, J. A. (2016a). De- scription of a new species of the genus Chaetostoma from the Orinoco River drainage with comments on Chaetostoma milesi Fowler, 1941 (Siluriformes: Loricariidae). Zootaxa, 4105(2), 181–197

Ballen, Gustavo A., Urbano-Bonilla, A., & Zamudio, J. E. (2016b). Farlowella mitoupibo, a new species of stick catfish from the upper Guaviare River, Orinoco basin, Colombia (Teleostei: Loricariidae). Ichthyological Exploration of Freshwaters, 27(4), 325–332

Moreno, F., Hendy, A. J. W., Quiroz, L., Hoyos, N., Jones, D. S., Zapata, V., Zapata, S., Ballen, Gustavo A., Cadena, E., Cárdenas, A. L., Carrillo-Briceño, J. D., Carrillo, J. D., Delgado-Sierra, D., Escobar, J., Martínez, J. I., Martínez, C., Montes, C., Moreno, J., Pérez, N., Sánchez, R., Suárez, C., Vallejo-Pareja, M. C., & Jaramillo, C. A. (2015). Revised stratigraphy of Neogene strata in the Cocinetas Basin, La Guajira, Colombia. Swiss Journal of Palaeontology, 134, 5–43

Ballen, Gustavo A. & Mojica, J. I. (2014). A new trans-Andean Stick Catfish of the genus Farlowella Eigenmann & Eigenmann, 1889 (Siluriformes: Loricariidae) with the first record of the genus for the río Magdalena Basin in Colombia. Zootaxa, 3765(2), 134–142

Ballen, Gustavo A. & Vari, R. P. (2012). Review of the Andean armored catfishes of the genus Dolichancistrus Isbrücker (Siluriformes: Loricariidae). Neotropical Ichthyology, 10(3), 499–518

Ballen, Gustavo A. (2011). A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group. Papéis Avulsos de Zoologia, 51(26), 383–398