Got one yesterday. Medium size with really nice color. Put in and he immediately fell into a crevice of some live rock and stayed there without moving. thought for sure he was dead 8O
Left him alone with the lights off for about 2 hours. brought the lights back on, gave him another hour and then threw some food. He was out like a shot and eating everything in sight
Stayed out of his hiding hole unless we moved too close to the tank, then, bang, right back in.
This morning, he seems to be getting much more comfortable. Out swimming with the clowns after the lights came on. Still dove for cover when I got too close, but came right out again and ate like pig.