I have a problem it seems. I've purchased 2 kole tangs and a mimic tang from the same store, and have had all three die on me. My other fish in the tank are as good as ever and I've never seen any problems with any of them.
Upon closer inspection of the last two tangs that died, their back spines (Scalple's if you will) seems to have been removed (There is just a slit, no spine). This seems to be the only reason leading to the death of these fishes that I can tell (I checkled for Ich constantly).
Has anyone ever heard of this being done to tangs?