Citation:Wijeyaratne, M.J.S. and Perera, W.M.D.S.K. 1998. Studies on the feasibility of using indigenous fish control agents for aquatic macrophytes in Sri Lanka. Proceedings of the Fifth Asian Fisheries Forum, International Conference on Fisheries and Food Security beyond the Year 2000, 11-14 November 1998. Lotus Hotel Pang Suan Kaew, Chiang Mai, Thailand.