Hozelock Fish FoodBall, a fun way to treat your fish. The Hozelock Fish FoodBall is a fun and active way to feed your pond fish. As the ball floats on the surface the fish are encourage to swim longer as they chase the ball for the food inside. The fish can nudge the side of the ball to slowly release the food inside. It is also a chance to view the fish for problems or disease as they swim closer to the surface. The ball can be used with most types of fish food.