Is a bluegill bony fish?

Yes, bluegill is a bony fish. Bluegills belong to the family Centrarchidae, which is a group of carnivorous fish species generally referred to as sunfishes or black basses. They are members of the order Perciformes, which is the largest order of bony fishes. Bluegills are characterised by their oval, flattened body shape, prominent dorsal fin with spiny rays, and blue-tinged markings on the head and gill covers. They are widely distributed in freshwater habitats across North America and are popular sport fish.