90 TONS of fish have died in fish farms in Vung Tau, Vietnam |

In the afternoon of 10-8, dozens of fish farmers under Cha Sa bridge (Long Son commune, Vung Tau city ) have come to Ba Ria – Vung Tau People’s Committee to meet with Chairman of the Provincial People’s Committee Nguyen Van Truong to present the fish Died abnormally on the Cha River in the past days. However, because the chairman of the provincial People’s Committee is working, the households have not met.

Previously, as reflected by fish farmers in Long Son commune, about a week ago, the phenomenon of dead fish scattered all over the cage makes them stand still.

Mr Nguyen Cong Bien, a fish farmer, said: “Fish do not show signs of disease but are lethargic, stop eating and die abnormally. This phenomenon occurs in most cages, “We are very interested in the cause of this condition after the authorities have taken samples.”

In the afternoon of the same day, the Department of Agriculture and Rural Development of Ba Ria – Vung Tau province reported on the incident.

According to reports, as of the end of 9-8, about 241,000 fish, estimated at nearly 90 tons, died in the last. There are 23 households where the fish died, of which 11 new fish stocked fish a few days, the fish have matured 3-4 months. Of these, 9 households have the highest mortality (10,000 to 25,000).

After receiving the news, the Department of Agriculture and Rural Development has sampled fish, water samples for testing. The results showed that none of the samples infected the virus causing necrotic necrosis on saltwater and brackish water fish. Fish specimens also have the appearance of Vibrio spp. Water samples all have COD and NH3 levels that exceed the allowable limit.

At the time of the dead fish, sewer No. 6 in Tan Hai Commune (discharge culvert causing mass mortalities in 2015) was sealed, there was no discharge, Due to the rain, it should reduce salinity as well as oxygen content in water. In addition, the amount of dense fish also hinders the flow of water.

Analysis of water samples shows that there is local pollution in the culture area, there are some causes leading to such situation as domestic wastewater of households in the area, the amount of excess food. After the dead fish, people do not handle the process that the phenomenon of throwing fish in the river makes the water environment more polluted, the fish die more.

Also from the reflection of the people, functional forces have discovered the business Ngoc Viet (trading in materials for floating raft aquaculture) discharge waste water rinse plastic barrels, labels outside Records containing some chemicals, near the dead fish should be seized and analysis of wastewater samples.

Ba Ria – Vung Tau Department of Agriculture and Rural Development asked local households and local authorities to mobilize people to harvest fish to reach the size to reduce the damage and stop the stocking to improve the water environment. At the same time, find out the main cause of death.

Courtesy of nld.com.vn