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Green Sunfish

Green Sunfish

Green Sunfish are a native species found statewide throughout Illinois in nearly every creek, river, lake, and farm pond.

These aggressive panfish are highly adaptable, tolerating poor water quality and varying levels of turbidity, dissolved oxygen, and temperature - making them common in muddy, eutrophic systems where other sunfish cannot survive.

Scientific Name: Lepomis cyanellus

Physical Characteristics:
  • Distinguished by their heavy body, large mouth (upper jaw extending to the middle of the eye), blue-green coloration with yellow metallic flecks, and distinctive dark spots on the posterior dorsal and anal fins plus the ear flap.
  • Averaging 4.5 inches in Illinois with a state record of 2 pounds 1 ounce, they're more bass-like in body shape than typical round sunfish.
  • Their larger mouth allows them to take bigger prey than most sunfish.

What to know

Habitat Distribution

  • Found statewide throughout Illinois in nearly every creek, river, lake, and farm pond.

Specific Spots

  • Target them around structure including brush piles, rocks, woody debris, vegetation, docks, fallen logs, and weed beds in the upper to middle water column.
  • They prefer areas with structure including rocks, brush, vegetation, logs, and seek refuge around docks and fallen trees.

Green Sunfish FAQ

Answers from onWater's species guide.

What are the best lures and bait for Green Sunfish in Illinois?

Top live baits include nightcrawlers, red worms, wax worms, crickets, grasshoppers, and mealworms. They readily hit small artificial lures including 1/64-1/16 oz jigs (especially with soft plastic trailers), small spinners, 1-inch crankbaits, beetle spins, tiny spoons, and poppers.

What flies work for Green Sunfish in Illinois?

Small flies (#10-18) including woolly buggers, poppers, nymphs, wet flies, Adams, elk hair caddis, and terrestrial patterns.

When is the best time to fish for Green Sunfish in Illinois?

Spring and summer provide the best fishing when waters reach 65-75°F and fish are most active, though avoid late May through June during spawning when they're protecting beds.

How do you catch Green Sunfish in Illinois?

Fish under small bobbers or with split-shot rigs. Cast near vegetation and structure, letting lures or flies sink slowly for bigger fish. Look for schools in weedy areas of lakes and ponds - throw bread or crackers to locate and activate them.

What do Green Sunfish eat?

They're opportunistic omnivores feeding on aquatic insects (their primary diet), small fish, crayfish, snails, zooplankton, and occasionally plant material.

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