The bivalve molluscs are fresh water bivalve available in most of the regions in India. Most of the individuals are females or hermaphrodites and no complete male was observed. The most of maximum species of bivalve in various reproductive cycle times and water pollutions direct impact of development & productive imbalance. Particularly in Maharashtra state. Several environmental factors such as temperature, turbidity, depth, mechanical factor, light intensity, genetic & hormonal control. The maturation of gonads is also dependent on the richness of food supply which depends on climate. Generally the reproductive cycle of bivalve mollouscan population includes activation, growth and gametogenesis. The histological sections of the gonad throughout the study revealed that gonad consists of numerous follicles innervated by the connective tissue and muscles to determine the size of the oocyte. The present study was totally depends on the climatic imbalance in due to maturity of the gonads.