Fish do not age. They simply continue growing. Eventually they die from predation, bad enviro, lack of food, poison, parasites, injury or whatever. Theoretically a fish can live forever. The vagaries of the environment, however, see to its dispatch. This sunfish was probably trying to escape internal parasites. A necropsy should be in order.
Fish age. Any aquarium owner can tell you that.
George W. Bush.
This is not an unusual size for this kind of fish. You can see them at the aquariums.
At New Smyrna Beach? It was probably trying to escape sharks. That place is the shark-bite capital of the world, a fact we learned AFTER we bought a timeshare there.
I guess you've never witnessed a salmon run.