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Lake Whitefish

Lake Whitefish

Lake Whitefish are native coldwater members of the salmonid family found primarily in Lake Michigan waters along Illinois' northern border.

Scientific Name: Coregonus clupeaformis

Also known as humpback whitefish

Physical Characteristics:

These distinctive fish are characterized by their elongated, silvery bodies with olive to pale greenish-brown backs, small heads with protruding snouts that overhang their mouths, and an adipose fin.

They're often called 'humpback' whitefish due to their small head-to-body ratio, with older fish developing a fleshy bump at the shoulders. Adults typically reach 12-26 inches and weigh 1. 5-4 pounds, though Lake Superior has produced specimens over 42 pounds.

What to know

Habitat Distribution

They prefer cool, well-oxygenated deep waters, often retreating to depths of 200 feet in summer, but move to shallow rocky areas and reefs during feeding periods.

Key Locations

Lake Michigan waters along Illinois' northern border

Specific Spots

Focus on areas 15-50 feet deep with rocky or hard bottom structure. Target them along Lake Michigan's rocky shorelines, reefs, breakwalls, and near tributary mouths.

Lake Whitefish FAQ

Answers from onWater's species guide.

What are the best lures and bait for Lake Whitefish in Illinois?

Effective lures include small jigs (1/32 to 1/16 ounce) in white, yellow, or natural colors, often tipped with wax worms, small minnows, or fish eggs. Small spinners, spoons, and teardrop jigs also produce fish, especially when worked slowly near rocky points and reefs.

What flies work for Lake Whitefish in Illinois?

For fly fishing, use small nymphs like Prince Nymphs in sizes 14-22, which are highly effective for this species. During insect hatches, try dry flies matching local mayflies.

When is the best time to fish for Lake Whitefish in Illinois?

Lake Whitefish fishing is best during spring through fall, with peak action from May through October when they're actively feeding. Spring fishing (April-June) is excellent during mayfly hatches when fish move into shallower waters to feed.

How do you catch Lake Whitefish in Illinois?

Marabou jigs suspended under slip floats work particularly well, allowing precise depth control near bottom structure. For fly fishing, fish them near the bottom using weighted patterns or add split shot to get down to feeding zones.

What do Lake Whitefish eat?

Lake Whitefish are primarily bottom feeders with a diet consisting of mayfly larvae, midge larvae, chironomid larvae, small crustaceans like amphipods, fingernail clams, snails, and occasionally small fish. Young whitefish start on zooplankton before transitioning to benthic invertebrates.

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