Very good to see this article. Yes, I use it, I have been getting the "Catfish Chow" version of it at our local farm supply for .42 cents a lb. I know it is a high protein food. I know they have a Trout Chow also, I used to sell it when I had my shop, but I didn't see it at our local store, yet. I also have been feeding Tetra Pond Vibrance, trying to help the color. I had never heard about the making them infertile, that would have worried me. Glad you put that rummor to rest. Thanks for posting this, I am anxious to hear others comments as well.