Koi-toy.

Fill the floating food ball with a normal amount of pellets (Ø 3-6 mm), close the ball and drop it into the pond. Your fish will play with the food ball, which releases the food. The fish are engaged in an active way, reminiscent of natural foraging behavior. You can also fill the food ball with silkworms if you like. Tip: Attach a wire to the food ball so that you can easily remove it from the pond.