It has been in the tank for a month. He seems to stress out all the time. He will even back into a corner and freeze with that color change. He appears to be breathing fast and find flapping fast. Thanks for the info and I hope that is all it isTotally normal. Camouflage when they sleep. I'm guessing it's new to the tank and should calm down soon.
Thanks so muchSounds like he's just getting used to his new environment. I had one at work that was super skidish like that. (I've had 3 over the years.. one of my faves). The one in my mixed reef home tank is very tame. I can touch it and hand feed it daily. Not scared of me at all but it's a few years old now too. Great tankmate also. The only thing I'll say is it's an lps polyp eater. Small Zoe's and such can be goners. But Give it some time. As long as it's eating, no worries.