Physicochemical Analysis and Diversity of Fish and Aquatic Insect in Hatnur Dam in Maharashtra and Ukai Dam in Gujarat, India

Background: Abiotic and biotic factors of an ecosystem are indicators of its physical and biological conditions.There is a scarcity of research related to riverine system dominated by Tapi River in north Maharashtra and South Gujarat, wherein the water of Tapi is mainly used for irrigation, domestic purpose and power generation.Methods: Physicochemical parameters of water samples collected from Hatnur reservoir and Ukai dam were estimated by standard methods described by American Public Health Association (APHA) and statistically compared.Collected fish and insect species from both reservoirs were identified using standard keys.Results: A field study at both reservoirs indicated that the estimated values of physicochemical parameters of water samples were within the range described by APHA.From March 2022 to February 2023, 30 species of insects and 35 fish species, including major carp and catfish in river Tapi were the major findings.Conclusion: During the study period, the presence of 30 species of insects and 35 fish species, including major carps and catfish indicated river Tapi might provide favorable physicochemical conditions to sustain regional diversity of biota.