I recently added a 5 inch naso tang to my 125 gallon reef tank. I bought it from a reliable LFS and inspected it very well, the fish looked perfect. I have had it in my tank for around. 2 And a half weeks and I am noticing a 1" by 2" patch on its right side that kind of resembles ich. Its ONLY on its right side in that area. The fish has lots of energy, is never hiding, and is a heavy eater. Could the 400 watt halides have burned him? I did see him adjusting to the tank and trying out different places to hid and seen him almost get stuck a few times, could that cause an area to resemble ich? I have probably 15 other fish in the tank and none of them have ich. All my parameters are in order and my temp is between 77 and 80. I tried to take a picture but it doesn't even show up in the picture it just looks like I'm taking a pic of the fish.