The ideal treat food for vegetable eating fish including goldfish plecostomus loaches cichlids and algae eating marine fish. An Adhesive food tablet that can be stuck to the aquarium glass allowing your fish to graze in full view or allowed to sink to the bottom of the tank. These treats contain Spirulina algae and spinach. To use press the flat side of the tablet onto the glass. If you only have one or two fish break the tablet into smaller pieces. Ideal to feed in combination with all other FishScience aquarium foods but particularly suitable to feed with FishScience Mini Algae Wafers.