Lake Sturgeon
(Acipenser fulvescens)

Length: 3-6 feet [1-2 meters]
Weight: 10-80 pounds [4.5-36 kilograms]
Coloring: olive-brown to gray on back and sides, with white belly
Common Names: freshwater sturgeon, rock sturgeon, bony sturgeon, smoothback, rubber nose
Great Lakes Habitat: Lake Superior, Lake Michigan, Lake Ontario, Lake Huron, Lake Erie

The sturgeon is a huge, heavy, bony-plated fish with a sharklike tail that lives in large rivers and lakes and once was found throughout the Mississippi River, the Great Lakes, and the Hudson River. These "living fossils" from the middle ages of fish evolution come from a fish family more than 60 million years old. The sturgeon is the oldest living and the biggest fish in the Great Lakes.