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Blue Sucker

Blue Sucker

Blue Sucker is a large-bodied, long-lived freshwater species native to Missouri's river systems.

These fish are sensitive to water pollution and habitat degradation, making them rare today compared to their historical abundance when they were commercially harvested. They are considered an indicator species for riverine health.

Scientific Name: Cycleptus elongatus

Physical Characteristics:
  • Distinctive fish characterized by their elongated, streamlined bodies with small heads tapering to a fleshy snout, and an inferior mouth positioned for bottom feeding.
  • They display variable coloration from light steel-gray to almost jet black in spring, with a long falcate dorsal fin containing 24-35 rays.
  • Adults average 2-3 kilograms (4.4-6.6 pounds) and 76 centimeters (30 inches) in length, with record lengths reaching 84 centimeters.
  • During spawning, males develop tubercles and both sexes become darker in coloration.

What to know

Habitat Distribution

  • Native to Missouri's river systems, particularly the Missouri and Mississippi Rivers and their major tributaries.
  • In Missouri, they inhabit swift-flowing areas of the Missouri River drainage, preferring the thalweg (deepest channel) of large river systems.

Key Locations

  • Missouri and Mississippi Rivers and their major tributaries.
  • The best fishing opportunities occur in the channelized reaches of the Missouri River along Missouri's borders, especially the upper channelized reach from Ponca, NE to the Platte River confluence where gill net catch rates have shown the highest concentrations.

Specific Spots

  • Focus on deep water channels and areas with moderate to swift current over hard substrates like gravel, sand, and rocks, avoiding silted areas entirely.
  • Look for areas where tributaries enter the Missouri River, as Blue Suckers may use these confluences as travel corridors.
  • They prefer heavy current over gravel, sand, and rocky bottoms that are silt-free.

Blue Sucker FAQ

Answers from onWater's species guide.

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

Target aquatic insect larvae, particularly caddisfly, midge, and hellgrammite imitations, along with small crustacean patterns.

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

Most active during spring months, but avoid the March-June spawning period (water temperatures 53-62°F) when they should not be targeted. Post-spawn periods in summer may offer better opportunities when fish return to feeding areas.

How do you catch Blue Sucker in Missouri?

Fish directly on the bottom using presentations that mimic their natural prey. Fish during periods of stable or slightly rising water conditions, as these fish are sensitive to environmental changes.

What do Blue Sucker eat?

Bottom feeders with a diet consisting of aquatic insect larvae (including caddisflies, midges, and hellgrammites), crustaceans, plant materials, and algae.

Where do Blue Sucker live in Missouri?

Native to Missouri's river systems, particularly the Missouri and Mississippi Rivers and their major tributaries. In Missouri, they inhabit swift-flowing areas of the Missouri River drainage, preferring the thalweg (deepest channel) of large river systems.

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