yes, you should have! He's a little traumatized, I think. I saw him cruising around after the lights went out picking at the sand a bit, so I know he WANTS to eat. He's been hiding in the back since the lights came on today. I assume he'll adjust in a few a days.
PS: Phil, this wrasse is clearly larger than the 3.5" you advertised! My roommate has nicknamed him "Goliath" as he is easily double the size of my largest fish.
I think my yellow assessor might be scared into hiding for a little while though - he caught one look at the wrasse, swam into his cave, and I haven't seen him again today!!!