Edible freshwater fish include catfish, whitefish, bass and crappies. Other fish that can be found in fresh water are trout and salmon, but these fish also return to the sea. They return to fresh water to breed.
Catfish are largely found in warm waters. Some are scavengers and can be found in muddy waters where other fish will not live. Catfish are among the most popular of edible freshwater fish. They have long, scaleless bodies, barbels around the mouth and venomous spines in their dorsal and pectoral fins.
Other edible freshwater fish are those in the whitefish family, which can be found in the northern United States and Canada. They are related to salmon and have an adipose tissue or fatty fin near the tail. Most of these fish live in lakes, including the lake whitefish, the lake herring, the shortjaw cisco and the Arctic grayling.
The largemouth bass, which prefers clear water, is a sought-after game fish that can grow to over 20 pounds and puts up a great fight before it is landed. Crappies, the largest of the sunfish, are found in the Mississippi Valley and the Great Lakes. Its species are the black crappie and the white crappie. These fish are easily caught and are favorites of ice-fishers.