Feeding fish seems like it should be simple, right? Not always One fish may bully others away from the food. Strong water currents may suck food away before the fish get to it. Shy fish may not want to dine with the others in their tank, or finicky eaters may only eat one type of food. Using a fish feeding square can solve all those problems in one fell swoop. Put foods into the circle, it will prevent food from floating around. The fish feeder is suitable for feeding flake foods and other floating foods. Feature - Color: Black. - Material: Plastic. - Size: Approx. 10 x 10 x 0.5 cm / 3.9 x 3.9 x 0.2 inch (L x W x H). - To retain floating foods and prevent food from entering the filter. - Without food waste. - Suction cup to fold the food tray from floating around in the aquarium. - Float to retain the fish food in an area. - Suitable for feeding flake foods and other floating foods.