Family Polyodontidae

Polyodon - Once common throughout the Midwest, overfishing and habitat changes have caused major population declines; both the meat and roe of the paddlefish are desirable as food.

Psephurus - Chinese Paddlefish, Psephurus gladius , also known as Chinese Swordfish, are among the largest freshwater fish.

Order : Acipenseriformes
Family : Polyodontidae