This is my first post. I'm converting a 54 corner FOWLR to a reef tank and I added a pepp shrimp 5 days ago. I haven't seen him since. I have a purple psuedo chromis that nipped at him right when I put him in the tank. Is he hiding from the chromis, or does he only come out at night? If he's dead, I would think I would see his carcass ?