I second what Bill said, and I strongly recommend getting pellet trained fish if possible and feeding them. You really need to feed them regularly, and a solar powered feeder will do that for you. A lot of people want to hand feed and there isn't anything wrong with that, even so I still recommend a solar powered feeder. You can set the feed amount very low and hand feed. The days that you can't hand feed you can bump up the feed time duration and the fish won't lose any growth. Feed a good food like Optimal Fish Food, order right from their website, that price that you see is the price including shipping to your door via FedEx. Once you know how much you are feeding you can get on a schedule and they will auto ship feed at the rate that you want so you don't run out.