- Joined
- Jan 20, 2016
- Messages
- 320
- Reaction score
- 215
My powder blue tang, along with the rest of my fish, have been in qt for about a day now. I pulled them from the display to treat them for flukes, but I didn't want to chance that it might be ich. Tonight my powder blue tang started showing a dark blotchy spot under his skin, behind his fin, on his left side. It does not seem to be impacting him in any way. What could it be?


