Definition
Acipenseridae is the family of ray-finned fish that includes sturgeons and paddlefish. These fish are characterized by their cartilaginous skeletons and elongated bodies. They are found in rivers, lakes, and coastal waters of North America, Europe, and Asia. Many species are threatened by overfishing and habitat loss. Sturgeon are prized for their roe, which is processed into caviar. They are ancient fish!