The mass fish deaths have been found on the West Lake over the past two days. Hanoi authorities have asked West Lake Fish Company to collect the dead fish. 

The dead fish along Trich Sai Street

On the morning of July 9, a large number of dead fish were seen along Lac Long Quan Street.

Director of the city’s Department of Construction Le Van Duc said that the phenomenon was caused by the recent heatwave.

A representative from Hanoi Sewerage and Drainage Limited Company said that the company measured very low oxygen levels near the banks of the lake and the final conclusion on the incident would be announced after the result of other tests from the lake are processed. 

The dead fish estimated at 25 tonnes 

Around 500 workers have been organised to collect the dead fish. Many volunteers have also joined the work.

A volunteer collecting the dead fish 

Big fish were also found dead on the lake 

Bags of dead fish collected to be destroyed

Earlier in October 2016, hundreds of tonnes of fish were also found dead on the West Lake. Test results from the Hanoi Department of Natural Resources and Environment showed that the fish died from lack of oxygen.