AQUARIUM DIET SUPPLEMENT: Freeze-dried bloodworms are a nutritious supplement to boost energy and conditioning in your aquarium fish. FOR FRESHWATER & SALTWATER FISH: Perfect for bettas and ideal for small- to medium-sized tropical and marine fish. SPECIALLY PROCESSED: Minimizes any undesirable organisms found in live bloodworms. CHILD-SAFETY LID: Tetra BloodWorms should be kept out of reach of children. USAGE: Feed 2 to 3 times a week in addition to staple diet, only as much as your fish can consume within a few minutes.