I noticed that awful fishy death smell in my tank earlier today and lifted the hermie hut to find the only crab on top of the sand very still. I saw several small blackish bugs crawling on the coconut, immediately thought mites but these things fly. My hermie fell out of his shell and wasn't moving so I buried him and sprayed the tank down with salt water, rinsed the shell he was in and the hut. Most of the bugs are gone but they do fly so I'm thinking not mites but does anyone know what they are?? Gnats maybe just drawn to the stink? Please help! I have two more crabbies buried and don't want these bugs to attack them when they surface, if they do....I hope I'm just not an awful crabby parent and they are all dead. I don't want to try to un-bury them though in case they are just molting or hiding. Anyone??