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The article focuses on the dams in India which have led to fisheries collapses in all of its major rivers. It states that the fisheries collapses affect the biodiversity and livelihood in India. It states that the fisheries in Ganga river declined due to large-scale water diversion and canals. Moreover, professor Madhav Gadgil and doctor Nilesh Heda documented distinct fish species and work on a People's Biodiversity Register.

The article focuses on community conserved fish sanctuaries in India, which protects rare native fish species and the riverine habitats. It states that most of the sanctuaries are temple sanctuaries managed by devotees of riparian temples. It adds that the Shringeri Fish Sanctuary supports nearly 38 fish species while the Chippalgudde Matsya Dhama protect more than 27 species such as the endangered Mahseer and Puntius pulchellus.