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 world has seven continents, but do you know the largest freshwater fish in each? These creatures show the incredible ...