I have an emerald crab who always seems happy. He has already molted once like two months ago? I haven’t seen him for a few days and today I found him stuck to a rock. On further inspection it was either a molt or he’s dead. I’m not quite sure. I have a ten gallon with two clowns and some frag corals. All of my parameters are good. I don’t see him so I’m wondering if he’s dead. When I was looking at him (not sure how to tell if it’s a molt) I saw a tan bug looking thing crawling all over the underside. Is it a parasite or a problem I’m going to have with my clowns? I am very nervous about this bug