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 ...

These freshwater giants have greenish-grey coloring ... These organs, called barbels, help the fish to locate bottom-dwelling prey, such as snails, mussels, clams, crayfish, insect larvae, and ...

Ever ordered 'copi' at a restaurant? Bet you haven't seen it on a menu. That's the new name given to several members of the invasive Asian carp family in an attempt to boost sales and make the fish ...