Well, He died last night, but I still want to find out what caused it. I believe it might have been ich, but Im not sure. The tank is a 55 that has been set up for about 1.5 years. The puffer was the first fish added and I have had him for a little over a year. I also had a Tang die this morning and I think what happened is I purchased some uncured live rock a few weeks ago and I put the puffer and the tang in my 20 gallon just for a few weeks and I just found out how easily tangs get ich so I think that when I moved them the tang got stressed, developed ich and the puffer in return got it. He did have some spots on his fins, but with the pattern on his body i really couldnt tell if their were spots on it. Does this sound like ich more something else.