Mapping fish migration routes and identifying threats is crucial to protecting freshwater species and their habitats, ecologists argue.

The Mekong giant catfish is the official freshwater heavyweight champion of the world. According to the Guinness Book of Records, a nine-foot-long individual caught in northern Thailand in 2005 ...

Sue Perkins embarks on a life-changing, 3,000-mile journey up the Mekong, South East Asia's greatest river, exploring lives and landscapes on the point of dramatic change.

Five years after the Xayaburi dam in northern Laos began operations, the cost of Mekong hydropower is becoming ever more clear. With its potential to foster Chinese-backed economic enclaves and ...