Biologist and self-proclaimed extreme angler Jeremy Wade hosts this Animal Planet series that takes viewers all over the world to visit freshwater rivers and lakes, where deadly creatures ranging from tiny piranha to 700-pound stingrays lurk. Jeremy debunks myths and uncovers the truth about these mysterious monsters, including vicious Goliath tigerfish in Africa, the snakeheads invading America and man-eating catfish in the Himalayas.