Denew 2 pieces fish feeding rings (black, round and square), fish feeder Aquarium fish and turtle tank accessories food feeding rings [Curbing Fish Bullies] Curbing Fish Bullies. A great way to limit the fish in your community tank from becoming bullies is to use multiple floating feeding rings. Fill a square with fish food and let your more aggressive fish rush over to eat it. Once they are occupied, add a floating fish food to the second feeding square for the more timid fish to eat. Bullies can't hog all the rings, so add some as you feel necessary so that all your fish can eat in peace and quiet. [Keep your aquarium clean] Fish food rings keep food in a certain area, it inhibits food from floating to unwanted places such as the filter, which allows more food to be eaten. Easier to clean up residual feed, reduce waste, maintain water quality and add more fun to feeding. High Quality MaterialThe floating feeding ring is made of high quality rubber and plastic, which is environmentally friendly and safe for your fish, and is considered as the ideal aquarium food feeder for fish. Perfect for your fish tank. Suction cup suspension, swivel mechanism, floating design, when the water level rises or falls, the swivel rod repositions with the water level, the buoyant rubber is embedded in the bottom and the fish food ring always stays floating above the water surface. Feeding ring size] The square feeding ring measures 4 x 4 inches (10 x 10 cm) and the round one is 2.9 x 2.9 inches (7.5 x 7.5 cm) and is suitable for all kinds of fish tanks and aquariums. It is also suitable for fish, turtles, goldfish, cichlids, grouper, catfish, betta, aquatic pets and more.