The present study deals Physico-chemical and fish diversity of Matiyari Dam in Mandla District (M..) during period June 2017 to May 2018 to census and commercially important fishes in the Matiyari dam. The present paper highlights the variety and abundance of fresh water fishes in Matiyari dam, Dist. Mandla (M.P.) India. The results of present investigation reveal the occurrence of 42 fish species belonging to 6 orders, 15 families and 24 genera. Among the collected species, order Cypriniformes was most dominant constituting 47.62% followed by order Siluriformes constituting 11.90% order Perciformes constituting 21.43%, orders Osteoglossiformes 4.76% and Synbranchiformes constituting 9.52% and orders Beloniformes constituting 4.76% of the total fish species.