HELP: DARK RED/BROWN blotches on new purple tilefish

[a2beshouri]

Hello, I just got a purple tilefish today that seemed in very good condition ( I watched him eat a the store) and had no noticable injuries. When they tested my water they said nitrites/nitrates/phosphates ect were pretty much 0 However I just noticed that he seems to have some dark red/brown bruise-like marks near its head, and he seems a little lethargic behind a rock... My water parameters are great...but I cant seem to get the guy to eat....any suggestions? I have wanted one of these guys for a while...but I am not sure what is going on w/ him and if it is life threatening
I havent seen any signs of agression between the tilefish and his tankmakes..the only other fish in this 75g tank are two black ice snowflake clowns...a yellow tang...and two gudgeon dart fish...none of which seemed to give him problems

 

[Reefing Madness]

Alot of fish have the ability to change colors when stressed out. And with him being new to the tank, I'd say its a good possibility he's stressed out. He needs some time to get accilmmated to his new surroundings. Give him a few days to settle in. He should come out when you feed the tank, just to see whats going on.
How did you acclimate the new fish?