My Koi LOVE the Vibrance food! I have to give them the Spring/Fall kind once I start feeding them in the Spring, which they will eat, but once I can finally switch over to the Vibrance, they act like different fish - way more excited about their meals. As a matter of fact, I'm praying they make it through the winter because I overfed them a lot last year and they were FAT at the end of the season. I couldn't help it! They would get so happy-acting that I hated to stop tossing the stuff in the water!