Dong Nai: Tons of fish die in Ba Long Lake  Nearly 50 tons of dead fish have been taken out of the lake of Ba Long in the southern province of Dong Nai. This incident occurred in early March, causing heavy losses for 15 households in Ho Nai 3 commune of Trang Bom district, who had rented 30 hectares of the lake to raise fish for the last 10 years. A fish breeder said each household paid VND40 million ($2,000) for the water surface and over VND100 million ($5,000) a year to breed fish. The local authorities are investigating the cause. Ha Ngoc Canh, a fish breeder, said he had taken out hundreds of kilos of dead fish each day to avoid pollution. He said each family could have earned about VND1.5 billion ($70,000) this year. Locals said the water color had become darker. Ba Long Lake is located in an area with many factories producing construction materials. It is about 2 km from the hydroelectric reservoirs of Song May and Thanh Nien. However, dead fish have been found only in Ba Long Lake. Le Ha, VNN