Rock Bass
Rock Bass are a common, native species found statewide throughout Illinois waters.
They are sunfish distinguished by their six anal spines (compared to three in other sunfish), bright red eyes, and rows of dark spots arranged in horizontal lines along their sides.
Scientific Name: Ambloplites rupestris
Also known as redeye bass, goggle-eye
- They average 11 inches and one pound, with bright red eyes, and rows of dark spots arranged in horizontal lines along their sides.
- Six anal spines distinguish them from other sunfish.
- The largest recorded specimen reached 43cm and 3kg.
- They can rapidly change color to match their surroundings as camouflage.
Fishing in Illinois
Sangamon River
Lake Clinton
Illinois River
Salt Creek
Vermilion River
Evergreen Lake
Dawson Lake
Lake Bloomington
Upper Peoria Lake
Lake Decatur
What to know
Habitat Distribution
- Found statewide throughout Illinois waters in rivers and lakes throughout the state.
- They prefer clear streams with permanent flow, rocky or sandy bottoms, and low turbidity with plentiful cover.
Key Locations
- Chicago River (excellent for largemouth, smallmouth, and rock bass), Fox River system, Des Plaines River (20 fish/hr catch rates reported), and Kishwaukee River where they're commonly found in rocky areas downstream of dams.
Specific Spots
- Focus on areas 2-15 feet deep with rocky cover.
- They inhabit depths from shallow shoreline areas to deeper rocky structures near boulders, rock piles, tree roots, and rip-rap.
Rock Bass FAQ
Answers from onWater's species guide.
What are the best lures and bait for Rock Bass in Illinois?
For bait fishing, use common earthworms (most recommended), small pieces of nightcrawlers, wax worms, or live minnows. Effective lures include small jigs (white, chartreuse, pink), spinners, small crankbaits, and soft plastics in natural colors like motor oil, pumpkin, or green pumpkin.
When is the best time to fish for Rock Bass in Illinois?
Rock Bass fishing is productive year-round in Illinois, with peak action during spring and summer months when water temperatures range 60-80°F.
How do you catch Rock Bass in Illinois?
Present baits near the bottom around structure. Bait fishing and lure fishing are both effective methods.
What do Rock Bass eat?
Rock Bass are ambush predators that feed primarily on aquatic insects, crayfish, dragonfly nymphs, and small minnows, with feeding activity highest in late evening and early morning.
Where do Rock Bass live in Illinois?
Found statewide throughout Illinois waters in rivers and lakes throughout the state. They prefer clear streams with permanent flow, rocky or sandy bottoms, and low turbidity with plentiful cover.
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