This study showed the monthly variation of three zooplanktons both qualitatively and quantitatively. During the study period, three genera such as Moina, Cyclops and Daphnia were observed and Daphnia was dominant during the experimental period (March to June, 2013) followed by Moina and Cyclops respectively (Table 2). The maximum abundance of these zooplanktons was found in the month of April and minimum in the month of March. Daphnia abundance was highest in all the aquatic ecosystems in experimental periods whereas, abundance of Daphnia, Moina and Cyclops was found maximum in the month of April respectively. But minimum number of these zooplanktons was found in the month of March.