Local officials are fighting back. Experts track razor-toothed predator as it moves through state's hidden passages — here's ...

The lake sturgeon, with its sleek shape and rows of bony plates on its sides, looks a bit like an armored torpedo. These freshwater giants ... help the fish to locate bottom-dwelling prey, such ...

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 ...