Abundance of freshwater prawns along Ayeyarwady River sector in Magway Region was conducted during the study period from November 2015 to February 2016. A total of nine species of prawns belonging to one genus Macrobrachium of family Palaemonidae under Order Decapoda was recorded in this study. The maximum number of individuals was recorded for the species M. inquirendae (6032 individuals, 36%). The second highest number of individuals was M.tenuipes (4066 individuals, 24%) and the least number of individuals was for the species M.lanchesteri (113 individuals,1%). The highest number of prawn species 6 species, 7094 individuals (42%) in Magway, 9 species, 2707 individuals(16%) in Tha- phan-seik,9 species ,7067 individuals (42%) in Min-Bu were observed .

Keywords : Abundance, Macrobrachium, Ayeyarwady River, Prawn.