Identification, species diversity and abundance of fishes in Markazi province, were studied during years ????????????????-????????????????. Nineteen stations were selected that included aquatic resources such as springs, rivers and dam's lakes. Fishes were caught and transferred to the lab on monthly basis. The fish were then identified using reliable references. Results indicated that ???????? genus and ???????? species belonged to the Osteichthyes class. Species of Alburnoides bipunctatus with ???????????????????? was the most abundant and Gambosia holbrooki with ????????????????% was the least abundant in ???????? stations. Also ???? of the exotic fishes (Grass carp, Silver carp & Gambosia) were noticed in
this survey.