1. Encourages picky eaters to eat more --- Some fish are more finicky than others or maybe a bit shier and do not want to eat with the other fish. The Floating Fish Feeding Ring allows you to feed specialty foods to the pickier fish while sprinkling standard floating fish food to the general population of fish. It won't take long for your finicky fish to quickly learn that the square fish feeder is where to find their supper. 2. Restrains fish from being bullies --- A great way to restrict fish in a community tank from being bullies is to use multiple floating feeding rings. Fill one square fish feeder and allow your more aggressive fish to dash over to eat. Once they are occupied, add floating fish food to a second feeding square for the timider fish. Bullies can't hog all the rings, so add as many as you feel necessary so all your fish can eat in peace. 3. Lessens debris by keeping food contained --- By placing your pet fish's food directly into the feeder square, it restricts the flakes and pellets from floating into the filter. A clearer aquarium filter is far more effective at keeping your tank's water at a higher quality level and diminishes excess debris throughout the tank. 4. Fits perfectly in a fish tank --- At a convenient size of 4" x 4" (10cm x 10cm), the lightweight Square Feeding Ring for small fish from is constructed of high-quality plastic. It comes complete with a matching black suction cup to hold it securely in place. You also have the option of allowing the fish feeder to float ly along the surface of your freshwater tank or saltwater aquarium.