In this study , samples of farm shrimp species Paeneus indicus obtained from different stages of hatchery and rearing period and subsequent marketing , water and sediments of rearing farms and marine shrimp species Paeneus semisulcatus , were analysed for Vibrio spp . according to the methods described by American Public Health Association . The identified Vibrio species , were Vibrio alginolyticus , V . parahaemolyticus , ( Kanagawa positive ) and V . fluvialis . The results and detection of V . parahaemolyticus Kanagawa positive ( even in low proportion ) in this study suggest a probable risk for health of people consuming raw or under cooked shrimp . Therefore it is recommended to pay attention to post harvest handling e . g . washing the shrimp with fresh water containing 2 - 7 ppm chlorine and freezing at -40° C and adequate cooking to safeguard public health .