When this Niger trigger arrived from Liveaquaria 12 days ago it was perfect. It has been very active since day one and eats great. 3 days ago these appeared on it (see pic). The fish still is active and always hungry. This side of the fish is the worst, the starboard side shows minimal discoloration. The spots, flukes, whatever, also seem to be in slightly different places from day to day.
There's also a yellow tang in the tank (125 gal.) that was added the same day. The tang still looks fine.
Any ideas on what I'm dealing with here? Sorry about the low quality pic.
