Blue Sucker
Blue Sucker is a threatened species in Wisconsin, representing some of the largest remaining populations in the upper Mississippi River basin.
These are pollution-sensitive indicator species that only thrive in clean, well-oxygenated waters, making their presence a sign of healthy river ecosystems.
Scientific Name: Cycleptus elongatus
- These distinctive fish have elongated, streamlined bodies that vary in color from light steel-gray to almost jet black during spring spawning.
- They feature an inferior sucker mouth, long falcate dorsal fin with 24-35 rays, and can reach lengths of 20-33 inches, weighing 4-6 pounds on average, with some specimens exceeding 14 pounds.
Fishing in Wisconsin
Wisconsin River
Big Eau Pleine Reservoir
Lake Poygan
Castle Rock Lake
Spencer Lake
Little Wolf River
Wolf River
Fox River
McDill Pond
Wisconsin River Flowage
What to know
Habitat Distribution
- They inhabit deep, fast-moving channels of Wisconsin's largest rivers.
- They prefer sand, gravel, or rubble bottoms with moderate to swift currents, often associating with wing dams on the Mississippi and woody snags.
Key Locations
- Mississippi River, lower Wisconsin River (particularly the 149-km stretch below Prairie du Sac Dam), St.
- Croix River, Chippewa River.
- Target the deeper channels of the lower Wisconsin River near Prairie du Chien, Mississippi River pools (especially around wing dams), and the St.
- Croix River below Taylors Falls.
Specific Spots
- Focus on areas with sand, gravel, or rubble bottoms at depths of 3-12 feet, particularly along main channel borders near wing dams on the Mississippi River.
Blue Sucker FAQ
Answers from onWater's species guide.
What are the best lures and bait for Blue Sucker in Wisconsin?
Small hooks baited with single salmon e.g.gs or small pieces of nightcrawler. Some success has been reported with artificial lures, including small jigs and inline spinners, though specific patterns weren't detailed in available information.
When is the best time to fish for Blue Sucker in Wisconsin?
Best fishing occurs during stable weather conditions when water temperatures are below 50°F in early spring or late fall, or during summer in the deepest, fastest-flowing sections.
How do you catch Blue Sucker in Wisconsin?
Bottom fishing in deep river channels with moderate to swift current. Their bottom-feeding nature and preference for heavy current means fishing in the thalweg (deepest channel) of major rivers produces the most consistent results.
What do Blue Sucker eat?
Blue Suckers are bottom feeders that consume aquatic insect larvae, crustaceans, plant materials, and algae using their specialized papillae-covered lips to sweep along river bottoms.
Where do Blue Sucker live in Wisconsin?
They inhabit deep, fast-moving channels of Wisconsin's largest rivers. They prefer sand, gravel, or rubble bottoms with moderate to swift currents, often associating with wing dams on the Mississippi and woody snags.
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