First off, since 2000, catfish and tilapia rank as two of the most popular fish consumed in the United States thanks mainly to their taste and relatively low expense. And both contain heart-healthy omega-3 fatty acids.
Elevations and depths of the Great Lakes are shown by a profile in figure 41.6. Superior has the greatest depth, 1330 ft (370m); Michigan, Huron, and Ontario are of moderate depths, 800 to 900 ft (240 to 275 m); while by comparison Erie is very shallow, 200 ft (60 m).
Surrounded by Ontario, Canada, and the U.S. State of Michigan, Lake St. Clair (the smallest lake in the Great Lakes system) is not considered to be one of the Great Lakes, however, it is part of the Lake Erie basin. Lake St. Clair is shallow, averaging 10 feet (3 meters) deep. St. Clair's maximum depth is only 21 feet (6.4 meters), a mere fraction of Lake Superior's maximum depth of 1,332 feet (406 meters).