Has anyone ever dealt with these guys? I bought two on Tuesday when I was adding to my clean up crew mainly because they looked cool. When I bought them I also bought 20 blue legged reef hermits and two big turbos everything is doing well moving around great except for these two. They aren't moving and I find my self moving them to see if they are still alive. When I do move them I see there bodies move in. I found one upside down where I left it(probably a hermit turning it over) and it was sticking out from its shell a bit but like I said when I moved it it moved back into its shell. So they are both still alive but not moving at all. From research I have done they are safe for my tank and very good eaters some sources say they can demolish some algae.