Illinois State Fish: The Bluegill – History, Fishing Spots, and Records

The bluegill (Lepomis macrochirus) became the Illinois state fish in 1986 after schoolchildren across the Prairie State cast their votes to honor this beloved species. This member of the sunfish family represents more than just an official designation. For generations of Illinois anglers, the bluegill has been the first fish they ever caught, making it a symbol of childhood memories and the gateway to a lifetime of fishing. Found throughout all 102 counties in Illinois, this distinctive panfish with its dark olive-green color and signature black spot behind the gills continues to introduce young anglers to the sport while providing thrilling action for experienced fishermen on light tackle.

What Is the Illinois State Fish?

The bluegill is a slab-sided fish that typically features a dark olive-green color along the back with lighter sides. The species displays deep blue hues on its face and gill cover, which gives the fish its name. A distinctive black earflap, also called the opercular flap, marks each bluegill, along with five to nine vertical dark bands on its sides and a bright yellow or orange belly. The coloring varies based on water quality, geographic location, age, and sex of the fish. Adult males display more vibrant colors than females, and during the spawn, males take on even more brilliant hues. The fish has a small mouth and a spiny dorsal fin over the back that becomes soft toward the tail. An average mature bluegill measures six to eight inches long and weighs one pound or less, though some grow to about nine inches in length and weigh approximately twelve ounces.

Illinois schoolchildren selected the bluegill as the state fish through a voting process that gave them the opportunity to choose the species that would represent their state. The choice may have brought a smirk to the faces of many experienced anglers, but the humble bluegill played an important role in their fishing lives. Most fishermen and fisherwomen in Illinois caught a bluegill as their first fish. Though many moved on to pursue bigger gamefish as they grew up, the bluegill was where they got their start. From this perspective, no fish could be more worthy to represent the Prairie State. The next generation of anglers casting lines into Illinois waters will most likely reel in bluegill as their first fish.

How Big Do Bluegill Get?

The Illinois state record bluegill weighed 3 pounds, 8 ounces. Darren May caught that monster bluegill in a private pond on May 10, 1987. The world record bluegill weighed a whopping 4 pounds 12 ounces. That massive fish was caught in Alabama on April 9, 1950. These record-breaking catches far exceed the typical size most anglers encounter on Illinois waters.

An average mature bluegill measures six to eight inches long and weighs one pound or less. While these dimensions represent common catches, anglers targeting larger specimens should focus on clear lakes with lush aquatic vegetation. Ounce-for-ounce, bluegills are among the hardest-fighting fish around. Hooking a large bluegill on light tackle provides a thrill even for veteran anglers who have pursued much larger gamefish throughout their fishing careers.

Where to Catch Bluegill in Illinois

Bluegills are most abundant in clear lakes with large amounts of aquatic vegetation, but they also occur in a variety of habitats including pools, overflow ponds, oxbows, swamps, and man-made impoundments. According to creel surveys by the Illinois Division of Fisheries, anglers in the Prairie State catch more bluegills than any other fish each year. The species inhabits water ranging from rivers and streams to large lakes and small ponds. Joe Ferencak, impoundment program manager of the Division of Fisheries in Illinois, recommends specific waters for some of the best bluegill fishing in the state.

• Hennepin Canal: This historic waterway provides consistent bluegill action throughout its length. The canal’s structure creates ideal habitat with moderate depths and aquatic vegetation that attracts feeding bluegills. Public access points make it an accessible option for anglers throughout the region.
• La Salle Lake: Known for producing quality-sized bluegills, this lake offers clear water conditions that the species prefers. Anglers find success working the edges of weed beds and submerged structure where bluegills concentrate to feed on insects and smaller prey.
• Upper Mississippi River: The backwater areas and sloughs along the Upper Mississippi River hold excellent populations of bluegills. These protected waters provide the calm conditions and vegetation that bluegills need to thrive, making them prime targets during the warmer months.
• Crab Orchard Lake: This southern Illinois destination consistently produces bluegills for anglers. The lake’s combination of clear water, extensive shoreline habitat, and healthy aquatic vegetation creates ideal conditions for both numbers and size.
• Baldwin Lake: Anglers targeting bluegills find this lake productive throughout the season. The presence of gravel bottoms in certain areas attracts spawning bluegills during summer months, creating opportunities for concentrated action.

Additional productive waters include Argyle Lake, Mazonia Lakes, Dawson Lake, Horseshoe Lake, Vernor Lake, Cedar Lake, Ramsey Lake, East Fork Lake, and Devils Kitchen Lake. Each of these waters offers public access and healthy bluegill populations that provide action for anglers of all skill levels.

Best Time to Fish for Bluegill

In the summer, bluegills build nests in water less than about two feet deep. These nests are shallow, circular depressions and are frequently in areas with gravel bottoms. Often many males build nests in one small area. Females lay eggs in the nests and the males guard the eggs until they hatch. Spawning occurs from May through August, with peak activity during the warmest months. This spawning period creates excellent fishing opportunities as male bluegills become highly aggressive while defending their nests.

Bluegills are active in the evening and early morning, making these the prime times to target feeding fish. The species has a voracious appetite and feeds aggressively during these periods. Water temperature and clarity affect bluegill behavior, with the fish moving to shallower water during warmer conditions and relating more closely to structure and vegetation. Clear water conditions allow anglers to sight-fish for bluegills, adding a visual element to the pursuit that increases excitement.

How to Catch Bluegill

Bluegills often conjure up the nostalgia of childhood worm-and-bobber fishing trips. Due to their aggressive predatory nature and wide-ranging diet, these fish are among the easiest to catch of any freshwater fish. Young children can hook them with a child-sized fishing rod. Bluegills can even be caught on cane poles, the simplest of all fishing apparatuses. However, bluegills are more than just the fish of childhood memories.

• Best Baits: Bluegills are carnivorous and mainly eat aquatic insects and insect larvae. They also eat smaller fish, crayfish, snails, and algae when food supplies are low. Live bait options include worms, freshwater shrimp, and small insects. The diet also consists of zooplankton, tadpoles, and other small prey. If a bluegill can fit the animal in its mouth, it is a potential prey target.
• Gear Setup: Light tackle maximizes the fighting ability of bluegills. A small hook matched to the bait size ensures better hookups. Simple bobber rigs work effectively for presenting bait at the depth where bluegills are feeding. For anglers seeking more sport, ultralight spinning or fly fishing gear turns every catch into a memorable battle.
• Technique Tips: Target areas with aquatic vegetation where bluegills concentrate to feed on insects. During the spawn, focus on shallow areas with gravel bottoms where males build their nests. Bluegills move in groups of about 20 to 30 fish, so catching one often means more are nearby. Work the area thoroughly when you locate active fish.

Are Bluegill Good to Eat?

Many consider bluegill to be a top-tier freshwater fish for table fare. The fillets are firm with a mild, sweet flavor. Bluegill fillets do not have a strong fishy flavor that many people find off-putting. Bluegill may not appeal much to those who prefer white tablecloths and wine, but it is tough to beat for a casual fish fry with family and friends. The species is classified as panfish, a slang term used for fish that fit perfectly in a frying pan. Other panfish include crappie, pumpkinseed, rock bass, warmouth, white bass, white perch, and yellow perch.

Along with being a tasty fish, the bluegill is also one of the easiest fish to clean and prepare. The fillets are small since most bluegills weigh a pound or less, so you will need a lot of fish to feed a family. However, their large numbers in many bodies of water combined with their highly aggressive nature means you can catch a mess of bluegills fairly easily. Bluegills fight hard after they have been hooked, providing entertainment before they reach the table.

Bluegill Conservation in Illinois

Removing bluegills from the water is often healthy for the ecosystem. Bluegills reproduce in prolific numbers. They can overrun a body of water, especially if it is a small lake or pond. Removing some bluegills helps other fish thrive due to less competition for food and habitat. Females lay between 2,300 to 67,000 eggs, with several females potentially spawning in the same nest. A female may deposit eggs in more than one nest. The male guards the eggs, which hatch in five to 10 days.

The bluegill is native to North America, east of the Rocky Mountains. The species has been stocked throughout the continental United States and can also be found in southern Canada and northern Mexico. While the bluegill thrives in Illinois, the species has become invasive in other parts of the world. In 1960, Chicago mayor Richard Daley gifted bluegills to Akihito, Crown Prince of Japan. The prince donated the bluegills to Japanese fishery research agencies, hoping they could be farmed to provide a new culinary treat for the Japanese people. However, the fish escaped from their confines and proliferated in Japanese waters. The bluegill is now considered an invasive species in Japan, especially in Lake Biwa in Shiga Prefecture.

Frequently Asked Questions

Catch Illinois’s State Fish

The bluegill represents the Prairie State’s rich fishing heritage and continues to create lasting memories for new generations of anglers. Whether you are introducing a child to fishing with a simple worm-and-bobber setup or pursuing trophy-sized bluegills on light tackle, Illinois waters offer exceptional opportunities. Visit the lakes, ponds, rivers, and streams throughout Illinois to experience why schoolchildren chose this remarkable panfish as the state fish. Cast your line and join the tradition of Illinois bluegill fishing.