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Freshwater crabs constitute one of the largest groups of invertebrates. They areecologically as well as economically important owing to their role in nutrient recycling, water quality monitoring and small-scale fisheries. The organisms colonize the habitat according to the physical space required for survival and being that in heterogeneous environments, the organism is susceptible to many biotic and abiotic stresses. The present investigation deals with the study of analysis of adaptive ecological factors like dissolved oxygen, turbidity, salinity of water samples and also study about desiccation salinity gradients caused by mainly variation in precipitation and human activity in the Godavari river basin which leads to depriving the shelter of the crab species. In order to study the population of the Barytelphusaguerini factors such as reproductive cycle, adaption to environmental stress, population structure, sex ratio, abundance etc.