San Francisco Bay Brand Mini-Bloodworms are small-sized bloodworms for feeding smaller freshwater fish such as tetras, barbs, platys, mollies etc. in community aquariums, fish schools in planted aquariums, bigger fry or multiple Betta aquariums. San Francisco Bay Brand bloodworms are collected and packaged daily, so they retain their natural food value. Bloodworms provide essential nutrients that help maintain high energy levels and vigor in your fish.