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Blue Sucker

Blue Sucker

The Blue Sucker is a large freshwater fish native to Kentucky's major river systems. In Kentucky, they're classified as S3 (vulnerable) and are highly sensitive to pollution and serve as indicators of healthy aquatic ecosystems.

The species has declined significantly due to dam construction, habitat fragmentation, and water quality issues, making them uncommon throughout most of their Kentucky range.

Scientific Name: Cycleptus elongatus

Physical Characteristics:

Reaching lengths up to 93 cm (37 inches) with a distinctive elongated, streamlined body and blue-black coloration during spawning season. The Kentucky state record Blue Sucker weighs 8. 34 pounds.

What to know

Habitat Distribution

Native to Kentucky's major river systems. They inhabit the main channels of large rivers with moderate to strong currents, preferring deep pools with sand, gravel, or rocky substrates while avoiding silted areas.

Key Locations

Found primarily in the Ohio River, lower Green River, lower Licking River, lower Tennessee River below Kentucky Dam, and historically in the Cumberland River.

Specific Spots

Focus on deep, flowing pools with moderate to strong current over sand, gravel, or rocky bottoms, typically at depths of 3-12 feet.

Blue Sucker FAQ

Answers from onWater's species guide.

What are the best lures and bait for Blue Sucker in Kentucky?

Effective baits include nightcrawlers, small crayfish, aquatic worms, and small pieces of cut bait.

When is the best time to fish for Blue Sucker in Kentucky?

Late summer through fall when they're not spawning. Avoid targeting them during their spring spawning period (May-June) when they're in shallow riffle areas reproducing.

How do you catch Blue Sucker in Kentucky?

Since they're bottom feeders, use techniques that keep bait near the substrate. Fish around wing dams on the Mississippi River system and near woody debris or rocky structure in river channels.

What do Blue Sucker eat?

Their diet consists of aquatic insects, insect larvae (especially midges and caddisflies), crustaceans, small clams, plant material, and algae.

Where do Blue Sucker live in Kentucky?

Native to Kentucky's major river systems. They inhabit the main channels of large rivers with moderate to strong currents, preferring deep pools with sand, gravel, or rocky substrates while avoiding silted areas.

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