I need some help, I have never run into ich before luckily, but I have only had my 55 reef tank up for a year. I do see what looks like some discoloration on my copperband butterfly's tail fin. If someone could help me out I would really appreciate it. I don't want it spreading to my other fish. I just got the copperband a few days ago, he was eating at the LFS so I took him in good hope that he would eat in my tank. He has been picking off the rocks but hasn't eaten any mysis, kril, brine or pellets yet so I'm still trying. But I really don't know how to identify it, and want to take preemptive action. Thanks, and check out the pics I hope it helps.