On June 1, the Department of Agriculture and Environment issued a quick report on the mass deaths of caged fish on Tri An Lake.
Accordingly, from the night of May 28th to May 29th, prolonged heavy rain occurred in Tri An ward.
By the night of May 29 and early morning of May 30, fish in the rafts of households began to show signs of head emergence and death, lasting until May 31. The dead fish were mainly Hemibagrus, carp, and grass carp of all sizes, the majority of which were commercial size fish.
The amount of dead fish is about 250 tons of about 15 raft fish farming households.
Dead fish have been processed, collected, and sold to buyers for organic fertilizer.
After receiving reports from some raft fish farming households in the farming area of Quarter 1, Tri An ward about fish deaths, the Sub-Department of Livestock and Fisheries and the Technical Center for Natural Resources and Environment under the Department of Agriculture and Environment collected water and fish samples at the scene on the afternoon of May 30, 2026.
According to initial assessments, the cause of fish deaths may be due to sudden changes, environmental disadvantages; Due to prolonged heavy rains sweeping away organic matter from living, business, production activities,... accumulated for a long time in the dry season, it may be swept away by this heavy rain into the water area, plus the water in the area where the dead fish circulated very slowly, leading to fish being suddenly environmentally shocked and dying.
To minimize damage to caged aquaculture farmers on Tri An Lake in the coming time, the Department of Agriculture and Environment continues to coordinate with the People's Committee of Tri An Ward, specialized agencies and relevant localities to strengthen monitoring of weather developments, lake water levels, water environment quality and aquatic disease situation; at the same time, focus on implementing technical solutions to stabilize production and minimize risks for farmers.
