International Journal of Fisheries and Aquatic Research

Authors
Mohammad Mizanur Rahman, Md. Sohel Parvez, Kabir Ahmed Bhuiyan, Minhajur Rahman

Abstract
An investigation was carried out to study the qualitative and quantitative status of the phytoplankton community of commercial tilapia-carp polyculture ponds in the Muhuri project area of Mirsharai, Chittagong. A total of 40 phytoplankton genera under 10 classes were identified. Chlorophyceae was noticed to be the most abundant (22.5%) class followed by Zygnematophyceae (17.5%), Trebouxiophyceae (15%), Bacillariophyceae (12.5%), Cyanophyceae (12.5%), Euglenoidea (10%), Ulvophyceae (2.5%), Crysophyceae (2.5%), Dinophyceae (2.5%) and Tentaculata (2.5%). The class Bacillarophyceae among 10 classes and the genera Cyclotella among all the 40 genera were found in highest concentration in the present investigation.