I'm glad you all liked the photo. And yes, “feeding frenzy” probably sums it up quite well. The photo was taken in the nearby spa gardens, there is a vending machine selling fish food and a notice next to it saying that you don't need to worry as koi can eat all day long. In the video clip, which I of course also took, you can see a coot for size comparison, the koi are about 50 cm tall.