Ichthyofauna in the XhimojayDam, State of Mexico

Abstract: The State of Mexico has a large number of reservoirs that have the conditions necessary to host the life of freshwater fish, such is the case of Xhimojay dam for which there are no studies on the fish community. The objective of the present study was to determine the species of fish in the dam Xhimojay, State of Mexico, during the annual cycle 2013. Monthly samplings were made; the characteristics of habitat were recorded and collect organism for subsequent analysis in the laboratory. The physicochemical parameters which had a greater fluctuation in the system were deep and transparency. Four families were recorded where each family filed a species: Chirostoma jordani, Girardinichthys multiradiatus, Heterandria bimaculata and Cyprinus carpio, the most abundant species was G. multiradiatus with 1496 individuals and the species with smaller number of registered organisms was H. bimaculata with 121. The greatest diversity was presented in October and the lowest diversity was recorded in June. The species with the highest value of ecological importance was G. multiradiatus being that the physical and chemical parameters that characterize the environment favoring their presence