Bluegill

The bluegill ("Lepomis macrochirus"), sometimes known as "bream", "brim", "sunny", "copper nose" or "perch" as is common in Texas, is a species of freshwater fish of the family Centrarchidae (sunfish) from the order Perciformes. They are found in North America and commonly found in streams, rivers, lakes, ponds and wetlands east of the Rockies.
The bluegill is the state fish of Illinois.