Rotting fish blanketed the Sonia Vihar stretch of the Yamuna on Wednesday, triggering an explosive political brawl between the ruling Bharatiya Janata Party and the opposition Aam Aadmi Party.
The carcasses surfaced within 24 hours of the capital launching its first recreational electric river cruise—the ₹500, 40-minute Namo Yamuna River Safari. With the four-day Chhath Puja festival approaching, where hundreds of thousands of devotees stand chest-deep in river water to offer Arghya, the foul sight instantly ignited an administrative blame game.
Delhi Environment Minister Parvesh Verma moved swiftly to deflect environmental scrutiny, alleging that saboteurs hauled dead fish from outside and dumped them directly into the river to smear the administration. He instructed the environment department to lodge a formal First Information Report with the police.
As soon as the ferry started operating in the Yamuna, just a day after that, people from our department informed us that some individuals were dumping dead fish into the Yamuna. The grand festival of Chhath is approaching, and they want to spoil its atmosphere. Arvind Kejriwal has stooped to this petty politics to ruin that entire atmosphere. I have instructed our department to register an FIR regarding this, and the department is filing an FIR today.
Parvesh Verma, Delhi Environment Minister
But the opposition refused to buy the sabotage thesis.
AAP legislator and former minister Saurabh Bhardwaj struck back, publishing video footage of floating carcasses and accusing the administration of dumping hazardous clearing agents into the riverbed to mask toxic froth. He challenged the government to produce physical proof of any covert dumping operation.
"Minister Parvesh Verma is verbally saying that dead fish were brought from somewhere and dumped into the Yamuna, but this is nowhere mentioned in the complaint," Bhardwaj countered. "Everyone knows the fish must have died from polluted water. Will the government order an investigation into how thousands of fish died?"
November's incident marks the second large-scale aquatic kill inside Delhi’s river boundary within thirty days. In October, hundreds of dead fish surfaced upstream at Burari near the Wazirabad barrage—traditionally classified as the cleanest ecological pocket of the river inside the capital. That die-off unnerved environmental monitors because post-monsoon inflows usually dilute industrial waste and bolster dissolved oxygen levels.
Political stakes around river quality had already reached a fever pitch weeks earlier. On October 29, BJP Member of Parliament Manoj Tiwari took a public dip and sipped river water at Sonia Vihar, insisting the river was clean. AAP leaders dismissed Tiwari’s spectacle, arguing the upstream Sonia Vihar corridor has always maintained lower pollution loads before untreated urban sewage empties into downstream stretches.
| Parameter | Detail & Official Record |
|---|---|
| Primary Incident Location | Sonia Vihar stretch, Yamuna River, Northeast Delhi |
| Immediate Preceding Event | Commercial debut of Namo Yamuna River Safari cruise |
| Prior Incident | Mass fish mortality reported at Burari (upstream of Wazirabad barrage) |
| Executive Action | Environment department instructed to register an FIR for alleged sabotage |
| Opposition Counter-Claim | Release of toxic chemicals upstream to artificially suppress water froth |
Police investigators are examining local CCTV footage along the Sonia Vihar riverbank to verify the dumping allegations, while Delhi’s environment department prepares its formal complaint for submission to law enforcement authorities.