Down south at the fish breeding ponds the farmers hang a dead animal carcus over the water. As the animal rots the flys lay there eggs which turn into maggots which fall into the water and feed the fish. I saw this in Alabama at a hybrid bluegill farm. It was amazing the amount of maggots hitting the water. The carcus looked like it was moving there were so many maggots. There was hardley any smell. LakeRaider:""