I purchased a crocea from my local reef store last weekend and yesterday I noticed he doesnt look to be doing too well. His color was a beautiful purplish blue with vivid specs of even more intense color. Now, he is tucked in barely coming out of the shell and its gapping open fairly wide (color is still there hoever). I have tested all water parameters, and everything looks good. I even placed him high in the LR so he would get ample light. I have been feeding the tank inhabitants as normal and they leave him alone. Could he not be getting enough food? Does anyone have any suggestions? Please help!