other پژوهشي Orginal research papers Due to industrialization, a number of factories and human population have increased rapidly. As a result, the amount of waste matter such as heavy metals released to the environment has been increased. Specifically aquatic systems are more sensitive to heavy metal pollution and the gradual increase in the levels of such metals in aquatic environments, mainly due to anthropogenic sources, have become a problem of primary concern (Ashraf <em>et al</em>., 2012). The natural aquatic ecosystems may extensively be contaminated with heavy metals released from domestic, industrial and other anthropogenic activities (Kamaruzzaman <em>et al</em>., 2011).<br> &nbsp; Heavy metals, Accumulation, Cyprinus carpio, Squalius cephalus, Capoeta umbla, Muscle 188 198 http://jifro.ir/browse.php?a_code=A-10-1505-5&slc_lang=other&sid=1 M. Caglar 100319475328460029801 100319475328460029801 No Department of Fundamental Science, Faculty of Fisheries, Firat University, Elazig, Turkey Department of Fundamental Science, Faculty of Fisheries, Firat University, Elazig, Turkey O. Canpolat 100319475328460029802 100319475328460029802 No Department of Fundamental Science, Faculty of Fisheries, Firat University, Elazig, Turkey Department of Fundamental Science, Faculty of Fisheries, Firat University, Elazig, Turkey Z. Selamoglu zselamoglu@ohu.edu.tr 100319475328460029803 100319475328460029803 Yes Department of Medical Biology, Faculty of Medicine, University of Nigde Ömer Halisdemir, Nigde, Turkey Department of Medical Biology, Faculty of Medicine, University of Nigde Ömer Halisdemir, Nigde, Turkey Department of Medical Biology, Faculty of Medicine, University of Nigde Ömer Halisdemir, Nigde, Turkey