A young boy fishing at Lake Meredith National Recreation Area brought in an unusual catch this week: a South American freshwater fish that is a relative of the piranha. The pacu fish was caught at the ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

CASTLE ROCK LAKE, Wisc. -- Freshwater fish with teeth that swim in Ozark waters include walleye and brown trout. Those pale in size to the mighty muskellunge, a lean, mean fighting machine of northern ...

Charlie Clinton, 11, of Edmond, Oklahoma, caught an exotic, invasive fish known as the Pacu, a fish that is not native to Oklahoma. Oklahoma Department of Wildlife Conservation/Twitter An 11-year-old ...