Suddenly, my Atlantic/Caribbean Blue Tang came down with a bunch of brown marks. They are not round, but irregular shapes. The skin is a little inflamed around each of the marks. They are on both sides of the fish, but more on the side shown below. So far, his appetite and general demeanor are unchanged.
A friend provided me this link to common fish diseases: http://www.chucksaddiction.com/disease.html To me, it would appear to be the first "ailment"
In the last week, I've spotted about a dozen of these creatures in my refugium. They come in various sizes, from a few millimeters to a couple inches, and seem to be spreading. In the last day, I spotted one in the display, but it seems to have problems navigating in heavy current. It hangs on to the glass by the "feathers", and moves around using those so-called feathers. The body is simply dangling in the current. When groups of them are close together, they