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 ...

The documentation of invasive pike in Southcentral estuaries, a North American first, shows that the predators can spread ...