Fish bait can be purchased at the grocery store or grown at home. Some fish need to be caught first to use as bait for bigger fish. The higher the qulaity of the bait, the larger the caught fish will be. Once caught, fish can be used in cooking meals, as plant fertilizer, as bait or better still given a name and kept in a fishbowl at home! You can also mail your fish off to be mounted on a board which you can hang it in your home. It will come back in the mail the next day.