I drove through Belzona, MS a couple of days ago and I noticed thousands of huge pools of blue water. I stopped in the city and they had a catfish museum.
I learned a few things that I was not aware of. They teach the fish to eat off the top of the water with pellets that float to keep the fish from bottom feeding. They do not add antibiotics to the fish. The water is constantly freshed with well water. The county is the largest producer of catfish in the USA. They have thousands and thousands of acres of aquaculture.
I did not know that catfish farming was this huge.
Paul E. Smith