The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked in mystery. No one is sure how many giant stingrays are left, which habitats they prefer ...

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 ...