New Delhi, Oct. 15 -- Several dead fish have been spotted along the Yamuna near Burari in north Delhi since Wednesday night, raising concerns over the river's water quality and possible industrial pollution. Wildlife experts and activists have flagged the incident, citing the possibility of untreated industrial effluents and low dissolved oxygen levels.

Wildlife enthusiast and conservationist Hemant Garg, who spotted the dead fish on Wednesday, said, "We regularly go in Yamuna to wildlife conservation, bird census and tracking wildlife. The fish were observed last night and thousands of dead fish have been seen way upstream up to shank number 10, 11 and 12. The water usually clean here. We should be wary as drinking water is also sourced...