Mekong Dam Victims - Thailand. One nights catch in the Mun river. The number of fish species, and the size of the fish, has been dramatically reduced after the construction of the dam. Before the dam local fishermen could earn good money from fishing, today there is not even enough fish in the river to feed their families. The building of the Pak Mun Dam in Thailand has lead to strong opposition by the local population as the number of fish and fish species in the river is dramatically reduced because of the dam, affecting more than 20,000 people. Known as "The Mother of Waters", more than 60 million people depend on the Mekong river and its tributaries for food, fresh water, transport and other aspects of daily life. The construction of big dams is now threatening the life of these people aswell as the vital and unique ecosystem of the river.