Carlos Jaramillo

Gustavo A. Ballen

Gustavo A. Ballen

Gustavo A. Ballen

Center for Tropical Paleoecology and Archaeology
Smithsonian Tropical Research Institute
Smithsonian Institution
Ancón, Panamá


Instituto de Ciencias Naturales
Universidad Nacional de Colombia
Bogotá, Colombia



BSc. in Biology, Universidad Nacional de Colombia (2005-2014)
PhD. in Zoology, Museu de Zoologia da Universidade de São Paulo (2014-)


My main interests are biogeography, paleoichthyology, taxonomy and systematics. Currently I'm studying the fishes from Cenozoic localities in Northern South America, aiming to understand the history of the peripheral drainages of Northern South America (Magdalena and Maracaibo).


Mio-Pliocene paleodrainages of NSA from a paleoichthyologic perspective.
Late Eocene fishes and their bearing as evidence of marine transgressions during the late Paleogene.
New records for the La Venta fish fauna, middle Miocene.
Taxonomy of selected siluriform groups (Loricarioidei and Pimelodoidea)


Scientific papers

Ballen, G. A. & J. I. Mojica. 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, G. A. & R. P. Vari. 2012. Review of Andean armored catfishes of the genus Dolichancistrus (Siluriformes: Loricariidae). Neotropical Ichthyology 10(3): 499-518.

Ballen, G. 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.

Meeting abstracts

Ballen, G.A. 2011. Sexual dimorphism in the Ancistrus clade (Loricariidae: Ancistrini) and its relevance. II Encuentro Latinoamericano de Ictiología, Ibagué, Colombia. May of 2011.

Ballen, G.A. 2009. Plecos, ontology and cladistics, or the effect of historical individuals in phylogenetic systematics: The case of the family Loricariidae (Actinopterygii: Siluriformes). II Congreso de Estudiantes de Biología, Bogotá, Colombia. October of 2009.

Ballen, G.A. 2009. Systematics of the Loricariidae (Actinopterygii: Siluriformes): Character evaluation and phylogenetic relationships. I Congreso Latinoamericano de Ictiología, Medellín, Colombia. May of 2009.

Ballen, G.A. & O.J. Escobar. 2009. The genus Sorubim Cuvier (Siluriformes: Pimelodidae) in Colombia: Geographic distribution. I Congreso Latinoamericano de Ictiología, Medellín, Colombia. May of 2009.

Ballen, G.A. & C. Guerrero-Toro. 2006. Análisis de la variación individual en las hileras de dientes en renacuajos de Dendropsophus labialis. II Congreso Colombiano de Zoología, Santa Marta, Colombia. Nov 26th – Dec 1st of 2006.