Eremophilus mutisii is a species of catfish (order Siluriformes) of the family Trichomycteridae, and the only species of the genus Eremophilus. This fish grows to about 30 centimetres (12 in) and originates from the Bogotá River basin. It has probably been introduced to Ubaté, Chinquinquirá, and Tundama valleys, Colombia.
E. mutisii uses the vascularized central portion of its stomach for aerial respiration. Air ventilation takes place during a rapid dash to the surface with the expiration of old air preceding inspiration. Air-breathing occurs in hypoxic and normoxic water, but is not obligatory. The evolution of a reduced swimbladder is associated with a benthic mode of life in E. mutisii.
Redescription of the Pez Graso, Rhizosomichthys totae (Trichomycteridae), of Lago de Tota, Colombia, and Aspects of Cranial Osteology Revealed by Microtomography
Sep 03, 2009; Rhizosomichthys totae, the Pez Crasso, greasefish, or runcho of Lago de Tota, Colombia, is known from ten specimens and thought...