Prodac Stick-on Feeder TabletsFood tablets ideal for all species of freshwater tropical fish. This tablet can be stuck to the aquarium glass allowing you to closely observe your fish while feeding. Using your fingers gently press the tablet against the aquarium glass, the tablet remains stuck to the glass until the fish have completely eaten it. 60 gm. Main Ingredients: Cereals, fish and fish derivatives, molluscs & crustaceans, worms (earthworm }), yeasts (advanced yeast extract ) oils and fats, derivatives of vegetable origin, antioxidant.