The Bluegill, also known as bream, brim, sunny, or coppernose, is a species of sunfish mainly native to eastern North America, but it can be found throughout the continent. The body of the Bluegill is moderately small, disc-shaped (wide and compressed), and ranges from 19–48 cm (7.5–19 in) in length. The dorsal fin has 10 spines (anterior portion) followed by 11–12 soft rays (posterior portion), all fused together to form a single large dorsal fin. A dark spot is often present near the last few dorsal rays. The ear flap, an extension of the gill plate, is darkly colored, and a longer ear flap can be used to identify older Bluegill. This feature can cause confusion with other sunfish, such as the Pumpkinseed (Lepomis gibbosus), but Bluegill do not have any orange on the ear flap and exhibit more blue along the cheek, jaw, and operculum. Source: Koaw Nature (https://www.koaw.org/bluegill )