I got a large yellow tang, and today I notice like in the middle of his body that he has like a big thick line of like powder. Looks like powder. And it looks like they are some dots. What can it be?
I think that is the line that they originally have. It turned yellow, and my wife told me it had it since I bought it. So I guess i never saw it. But where they have like a white point at somewhere in the tail, some of the skin is like turning orange or kind of red, does anyone knows what can it be?
Mad, give us some details about your tank, and post your water readings. You may have posted this already in another thread, but please post them again.