There are three subspecies of lake trout. The fishing is typically excellent with many species of trout including record size Lake trout. Sea lampreys prey on all types of large fish such as lake trout and salmon. In the late 1980s increasing catches of brook trout and lake trout renewed interest. The average size of Eagle Lake trout are about and can exceed . Smelts are a food source for many fish, including salmon, striped bass, and lake trout. The lake has produced record lake trout. Fish species include landlocked salmon and lake trout. Fish species include rainbow trout and lake trout. The goal was 15% of salmon and 25% of lake trout. Lake trout inhabit cold, oxygen-rich waters. Chinook salmon can be successfully trolled at higher speeds than more docile lake trout. Also, they declined because of invasive lake trout. Donner Lake holds some of the biggest Lake Trout in the state. Trout including brook trout, lake trout, rainbow trout and splake are also found.