I took a small tub of earthworms and went fishing for bluegill. After catching a few keepers, I caught a small one about 4 inches long. The sun lit up the side of its face as I unhooked it.

Researchers at Auburn University used wild-caught bluegills (Lepomis macro-chirus) in long-term behavioral studies. Bluegills (Fig. 1) are also commonly known as bream, blue bream, sun perch ...