My biggest concern might be the bluegill biomass. These guys might be so crowded that they could cause a dissolved oxygen crash that would wipe out the cats. Since all of the BG are so small, it may have been an annual occurrence with only small fish that can get in the shallows surviving. These guys are spawning machines and catfish cannot control bluegill numbers.
That's interesting. Are you saying that it's possible that every year there could be so many bluegill that they use up all the oxygen so all of them die except the little ones in the shallows? Is there more oxygen in the shallows because of there being more surface area per volume?
