Abstract: Two individual of Oreochromis niloticus were caught in August and September 2009 by gillnet. The present study reported to most northerly record of introduced tropical freshwater fish species in Turkey. This record indicates its ability to adapt even cold regions with respect to it is a tropical climate fish species. However, there is not a clear explanation to the replacement of the Tilapia in Cappadocia. Therefore it should be confirmed the presence of the tilapia is accident or established in Nevsehir.