I have had my copperband for about 2 weeks now in a 125 gal reef tank. He shares it with a couple clownfish, a velvet damsel, and a yellow tang. He seemed fine till this morning when i saw him hangin out inside my cup coral just hovering. Just now several hours later i found him laying on the sand. I moved him immediately to the qt but dont know what is wrong. I dont see any fading or odd coloration. Whenever i put mysis shrimp in the tank he seems to eat a few. This time when i fed he didnt come out which is when i saw him laying on the sand. Water parameters look ok. When i put him in the qt he swam a little and has now parked himself against a rock.