I have not seen any other issues. I was thinking that the color on the nose was part of the tarnishing. The trigger is still small and it doesnt show well in the picture but the color on the nose looks to be yellow turning to black.
He / she eats a couple times a day I feed shrimp, krill, clam, squid, mysis and muscles.
Behaver wise the trigger is acting like a trigger. When I walk into the room he will swim to the front of the tank and follow me.
As of right now I do not see any other issues but as we all know fish act fine until they don’t.