I have a 125 Gallon FOWLR, 150lb's of live rock. Currently in the tank I have Koran Angel, Dogface Puffer, Volitan Lion, Lunar Wrasse and several damsels. Last week I got a Clown Trigger from a trusted LFS so I floated him as usual and put him in the tank (our levels are set up exactly the same salinity, etc.) My nitrates are 5ppm, Nitrites 0, no ammonia, PH is 8.2ish. Anyway, the Trigger has never acted very "tough" but was eating a little starting yesterday he quit eating and today he was just laying on his side and looking like he was about to die, after several hours of moving live rock, etc. I got him out and into a QT. It's weird he looks like he can't stay upright or something, it's hard to explain but the yellow half-circle area directly below his dorsal fin looks like it has been deflated or something it's all sunken in. Otherwise color is dull, looks stressed. I feel bad for the guy, not sure what I can do to help save him. Any suggestions on what I might check or try?