What Divers Should Know About Bluegill

Look for the Bluegill (Lepomis macrochirus) around fallen logs, old tree stumps, and dense aquatic plants in North American freshwater environments. These distinctive sunfish often inhabit shallow lake, pond, or river waters, but adults may also suspend just below the surface in deeper, open areas during summer. Identifying them is straightforward due to the deep blue and purple on the face and gill cover, dark olive bands, and a noticeable black "ear" on the posterior edge of the gill cover. They typically measure 4 to 12 inches, though individuals can reach over 16 inches.

These fish are commonly found seeking shelter near underwater structures, including natural debris and manmade snags, and frequently shift cover throughout the day or season. Bluegills show a preference for areas with abundant aquatic vegetation. Often observed in schools of 10 to 20 individuals, they sometimes mingle with other panfish species. While primarily freshwater residents, their presence in the Chesapeake Bay indicates a notable tolerance for slightly brackish conditions.