A large amount of fish die in the Linh Dam Lake in Hanoi's Hoang Mai District on August 1.
According to some local people, the dead fish was first seen on July 29, floating near the two streets of Nam Son and Linh Duong.
"Environment workers have arrived to collect the dead fish but bad odour can still be smelt from surrounding areas," a local woman, Nguyen Thi Hoa, said. "The hot weather during the past few days has made the smell worse."
The dead fish float near the two streets of Nam Son and Linh Duong.
Speaking with the media, a representative from Hoang Liet Ward People's Committee said that initial investigations showed that the fish died due to changing weather which caused a lack of oxygen in the water.
This is not the first time the lake has reported mass fish deaths. The same problem occurred in previous years when heavy rains came following prolonged hot days.