On December 30, Long Son Commune People's Committee (HCMC) said that the phenomenon of mass fish deaths in cages and rafts on the Cha Va River has shown signs of slowing down, reducing the number of dead fish. The reason is that the water environment has gradually improved; in addition, some farming households proactively sell live fish early to recover investment costs.
Previously, in recent days, mass fish deaths have occurred in cage fish farming households in the Cha Va River area, passing through Long Son commune; the most occurred on December 28th and 29th.
Local authorities and functional agencies have recorded about 20 affected farming households, each household suffering damage from about 4,000 to 46,000 heads.
The initial cause of fish deaths is tentatively determined to be due to reduced dissolved oxygen content in the water (due to strong algae growth, along with rapid tides, causing the water in the river to not change in time).
On December 30, Long Son Commune People's Committee also mobilized functional forces in the area and localities to conduct propaganda and support people raising caged fish to collect and treat dead fish on the Cha Va River, in order to limit water environment pollution and the risk of disease outbreaks.
The locality also contacted businesses to purchase dead fish to make fish meal, contributing to supporting aquaculture farmers to reduce difficulties. At the same time, propagate and guide farmers to promptly collect and treat fish carcasses according to procedures, absolutely not discharge fish carcasses into the river. This is an urgent measure to limit water pollution, prevent pathogens from spreading throughout the farming area and minimize adverse impacts on the ecological environment in the area.
Specialized agencies also recommend techniques for farming households; request to closely monitor the developments of farming environment quality, especially at low tides; increase oxygen production, ensure suitable dissolved oxygen content for farmed fish; regularly clean cages and rafts, remove excess food and dead fish to limit pollution and prevent epidemics...
