I made my first batch of food about two month's ago that my fish eat out of my fingers before it has a chance to get down into the tank. My mix is as follows; any small whole fish that is cheap at the market, shrimp, fresh squid, (from the chinese market in town) scallops, oysters, mussells, clams, dried nori, fresh spinach, any flake food that I might have, liquid Centrum multi vitamins and fresh garlic. The only time the Cuisinart comes out of the cabinet is when I do food for my tank, I blend each item until it is the size I want placing all ingredients in a large bowl, mix well and place in freezer bags, as I made a big batch I still have one full freezer bag left after 2 months. Anyone who can think of what fish eat in the wild can come up with a recipe, it all depends on your budget.