For the past 3 weeks my lionfish has stopped eating. No, he is not skinny yet. Already spoke with the LFS. He has been fed frozen krill for 6 months and now he won't eat. Right before all this started I was poking around in the tank and closed ( well narrowed) his entrance to his cave. Noticed it a day later when he couldn't go in there and fixed it. Still he won't go there anymore and won't float up. Just lays on the bottom. He is starting to look like he is leaning to the one side heavily. Now im going to try a feeder fish like the LFS recommended but its his behavior that is worrying me. Any thoughts are appreciated.