I've had this clown for 11 years. All my fish just finished 90 days in QT (30 plus days of copper power @ 2.25 plus) while the DT went fallow because of ich and my clowns went back in the DT first. Of course as soon as I release them in the DT I see a spot on her tail fin. I'm pretty confident this isn't ich or velvet. Its too large to be ich and also a little too bright white. Almost appears shiny at moments. You can even see it from the other side of the almost black tail fin. Its been about 3 days now and still there so I don't think it s debris so I'm guessing its some kind bacterial infection. Looking for thoughts and hoping I can treat with something that is reef safe now that they are in 180 gallons with their nems again. There is a white spot on her face under the first band but its just her natural coloring. The one on the tailfin has some depth to it. The spot looks small here, but she's probably 4" so a large clown.