Identification and distribution of fishes were studied in the three major river of Chahar Mahal-e-Bakhtiaty province including: Bazoft, Koohrang and Zayande rood during 1996-1992. 22 stations in order to sampling were chosen. Fishery was conducted seasonal during a year. Ten species were recognized which were belonged to 7 genera, 3 familes and 2 order. Cyprinidae family with 5 genera and 8 species was the various family among them. These species are: Capoeta aculeata, C. damascina, Alburnus alburnus, A.maculatus, Barbus lacerta, B. barbulus, Chondrostoma regium, Cyprinus carpio ; from Balitoridae family 1 genera named Nemachilus sp. and from Salmonidae family Oncorhynchus mykiss. The Zayandeh rood river with 8 species was more miscellaneous than Bazoft and Koohrang river with 2 species