Relative abundance and diet of Grundulus bogotensis (Characiformes: Characidae) in the Cundiboyacense plateau, Colombia.Abstract.To compare the relative abundance of Grundulus bogotensis in two river basins and the diet of the populations of three basins in the Similarities between the basins were determined using composition, of autochthonous origin, primarily immature insects and microcrustaceans and the volume abundance of populations of G. bogotensis in the Bogotá latter having, possibly, the greatest abundance of this favorable conditions for the survival of the species in