I've been using a variety of foods from fish roe after ocean fishing to bought foods. I saw these last year at one of the Asian markets, frozen silversides. These are different from the silversides I see that are basically minnows, these are more like tiny eels in various sizes and have been great food for anems, acans to dendros and even the fish since there are so many sizes. Hope it helps some of you fatten your corals and it is pretty cheap as well
some of the sizes
dendros love them and even the small heads usually find a perfect sized piece