I have a few (maybe 10) catfish. I added 3 kio which I know both can be a problem. I'm hoping they don't keep it stirred up all the time. I plan on adding more vegetation when I'm done digging. I want some lilly pads. I have crawdads also. Iv got a lil creek in my backyard that I got them from. At certain times of the years you can dip them out. I took a small fish net and could get prolly 10 in each scope. I put prolly 300 - 500 in the pond. Fish went crazy when I threw them in. Free snacks.