He's probably nose down to try and escape or he sees his reflection. it looks like lights are out in the picture but just in case I like to use ambient light from the room until they eat and come out regularly in qt. Seems to stress them out less but gets them adjusted somewhat to your day period.
I've successfully QT'd 2 golden rhomboid fairy wrasse, red velvet, melenarus and Leopard wrasse with Copper Power. It's ran at a higher concentration, 2.5 but all fish I put through it didn't skip a beat. I raised the levels slowly over 7 days as previously mentioned. I did bite the bullet and bought the high range Hannah checker for copper. anthias, tangs, wrasse, clowns, hawkish, gobies, and midas blenny all made it with no problem.
Humblefish has a great ich and velvet sticky in the fish disease treatment section. great read that'll help you spot symptoms and take the correct action.
Beautiful Fish & congrats! as long as you have ammonia/Sg/temp in check it'll be fine.
Do you plan to run a prazipro treatment? a good idea with wrasse IME