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Resource centre on India's rural distress
 
 

What’s causing mass fish death in India’s ponds and lakes? -Ananya Vyas

-Mongabay India

* Every year, several ponds and lakes across various Indian states become sites of mass fish deaths.

* The primary cause for this phenomenon is water pollution, most often stemming from anthropogenic activities.

* A key parameter of water quality is dissolved oxygen which can indicate the capacity of a water body to support aquatic life. In a survey of water bodies across six Indian states, not a single water body had a dissolved oxygen range, where all fish can survive.

In April 2022, several images of dead fish floating in the Banganga tank, located in Mumbai’s Malabar hill area, circulated on news sites and social media platforms. Clean up efforts were initiated after locals observed the dead fish in the tank and informed the Brihanmumbai Municipal Corporation (BMC). The contractor appointed for the clean-up claimed that four trucks of fish were removed from the site. Officials speculated that the loss of oxygen was the likely cause of the mass fish deaths.

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