Scientists and environmentalists say the [Don Sahong] dam will…put at risk the integrity of the entire Lower Mainstream Mekong River…International Rivers…said the dam…will devastate the region's fish and dolphins, the tourism industry, and the hundreds of thousands of fishermen whose livelihoods depend on the Mekong…Mega First Corporation Berhad, the Malaysian company in charge of building the dam, has dismissed these concerns, saying there are other channels the fish can use to migrate. Yeong Chee Neng, director of the Don Sahong project, said the dam would improve local livelihoods and fisheries…However, scientists and fisheries experts are concerned over what they say is lack of evidence that fish would migrate through new channels…