So I have some really sad news. Fluffy passed away either late last night or this morning. Last night we moved a small colony of zoas into my tank, like 5 or 6 polyps, (we already have zoas in there) and a few minutes later I checked on them and they were open. I saw fluffy at the bottom. He'd eaten a few hours before (half a silverside) and he looked normal. All of a sudden he started shaking really badly then gaped his mouth open and darted into the rocks. He squeezed himself into a cave and stayed there. I thought maybe I startled him because the lights were off. When I checked on him this morning he was still there. So I took the rocks out figuring he possibly couldn't get out on his own and he was dead. Frozen in a weird position with his mouth gaped open. I'm really upset because I don't know if I was the reason he died. Of never seen him shake like that, looked like he was being electrocuted. The chromis are fine and so are the crabs, snails, and corals. Anyone ever see anything like that or hear about it? Maybe the food did it? I waited a few days since the last feeding and its only small pieces. I feel so awful.