Mine get some once a week. I thaw a cube of them out at the beginning of the week to feed to my Betta's. Whatever is leftover, I put into my community tank at the end of the week. My Danio's devour them. (along with whatever else I put in the tank ie; ciclid pellets, carnivore pellets, veggie rounds, brine shrimp, peas and zucchini, as well as just the staple flakes, not all at once of course!!) They seem to eat any and everything and are thriving.