I had a gold rim surgeon die a couple weeks ago from what I believe to be velvet. They were covered in flakes everywhere and showed signs of difficulty breathing. They were gone the next day.
I just noticed on my purple tang these spots today. However, the spots look different than what was on my other fish that passed. Also, the purple tang is acting completely normal where as the gold rim was hiding and showed struggles.
Is the purple tang also developing velvet or is this something else?
Other notes: only changes since last fish passed on was the addition of a uv light and usual water changes