An Attempt has been made to study the fish diversity of Gharni Dam. The study was carried out during the month of June 2019 to Feb. 2020. The fish species was collected and identified during the study. A total 19 fish species belongs to 08 orders and 10 families were recorded. out of 08 orders cypriniformes was most dominant group represented by 8 species, followed by order Siluriformes with 3 species, Perciformes with 3 species, Anguilliformes, Cichliformes, Gobiiformes, Synbranchiformes, Osteoglossiformes each with 1 species.Thus the Gharni dam has more potential for fish fauna. The main aim of study is to know diversity of fish species of the dam. It is useful for researcher as well as fisherman to get idea about diversity of fishes. It is helpful to select exact variety of fish species for the culture so as to obtain maximum fish production.