Famous for its underrated fishing, the lake is teeming with a variety of fish species, including brook trout, kookanee salmon, whitefish, bull trout, yellow perch, and more. As many typically flock to the nearby Kootenai River, the lake often prides itself on its unfrequented, quiet, and solitary fishing areas. However, because Koocanusa is so large, it’s recommended to take a boat out to reach the best spots.