There are a lot of different kinds of fish that you can grow: Tilapia, Catfish, Trout, Bass. We recommend Tilapia if your climate is warm. They are a fast growing fish and do not acquire diseases very quickly and they can handle all kinds of bad water. The problem with Tilapia is that you have to keep the water temperature above 55 degrees. For a warm climate, that is fine. For a cold climate, you might want to grow Trout or another cold water fish. The best thing to do is to check with the local wildlife agency to see what they recommend for your area.