Faculty of Graduate Studies, University of Sri Jayewardenepura, Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura and Centre for Water Quality and Algae Research, Department of Zoology, University of Sri Jayewardenepura