Another mass fish death in lakes near Ha Long BayMass fish deaths have been found in lakes near the UNESCO world heritage site of Ha Long Bay. Fish die en mass in the lakes near Ha Long BayThe dead tilapias have drifted the shore along with rubbish, creating a bad smell and affecting local people. More seriously, the lakes discharge water directly into Ha Long Bay. Hoang Quang Hai, vice chairman of Ha Long City People’s Committee, said that local authorities will check the detention basin. The pollution at the basin will affect the environment at Ha Long Bay as there are some pipes connecting them.