The Mekong giant catfish has one of the fastest growth rates of any fish in the world. It can reach up to 440 pounds in only six years. They can live up to 60 years. Highly migratory, the species ...

The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked in ... the upper part of Cambodian section of the Mekong River, it appears the rays no longer ...