Common name: Round whitefish (not Atlantic whitefish, though they look similar), round fish, frost fish Native. ID: Small mouth, long cylindrical body, 2 dorsal fins, 1 adipose fin. Rare. Life cycle: Common in all but Lake Erie. Once widespread, but now few have caught or eaten them. Spawn in gravel beds in early November. Males and females do not eat before spawning, and then leave the eggs by themselves until they hatch in April. Predators: Lake trout. Atlantic salmon. Menominee eggs are often eaten by bullheads, yellow perch and white suckers. Eat: small eggs, insect larvae, lake trout eggs, small clams, snails.