What is this on my Naso Tang?

[CmbFish]

Hi, I bought this guy the two days ago. I noticed this spot yesterday and was very faint. Today it has gotten darker and maybe pushing out against it's skin. I don't remember seeing this when I purchased it. He is picking at the rock, has eaten some seaweed and some frozen brine shrimp. He is showing the normal color changes; white spots, dark color and then changing back to it's normal colors. I have read that it could be a number of things but most of them have spread, this is the only spot so far. He is housed with two clowns, two firefish, a pajama cardinal and royal grammar. Thanks in advance.

 

[LIreefguy]

My Naso had they also when I first got it
As long as it’s eating fine it should be ok

Naso are really bad shippers.

 

[4FordFamily]

Look like stress spots or perhaps legit parasites — blotchy color and sometimes what appears to be hyper melanization aren’t uncommon for the first few weeks or so.

Any other symptoms? Heavy breathing? Scratching? Flashing? Spots? “Dusting”?

 

[CmbFish]

Thank you! @LIreefguy But is there a name for this condition? I know they have these white marks that appear and disappear and the white dots that look like ick but also go away, and of course the darker shades... thanks again...

 

[CmbFish]

Look like stress spots or perhaps legit parasites — blotchy color and sometimes what appears to be hyper melanization aren’t uncommon for the first few weeks or so.

Any other symptoms? Heavy breathing? Scratching? Flashing? Spots? “Dusting”?

Thanks @4FordFamily !! He's very calm and going about his business. He's eating and swimming around the tank freely. He hasn't shown any symptoms and swims up to the glass when I sit there.