So about a week ago, I bought a ricordea from the fish store. Its on a sea shell. When I got it home and put in the tank I thought I saw something in the shell. Thought possibly it could be a hermit crab. Turns out its a bristle worm. From what I know of, it has not come out of the shell. The only reason I found it was a bristle worm is cause the other day when watching the tank, I knoticed it sticking out of the shell about 1 1/2 inches and not quite pencil thick. Its in my 14 biocube. I do have a neon dottyback in it but don't think he has found the worm. Should I let the dottyback have it when it finally comes out again? Or should I get it out asap? I know the dottyback can tell something is in the shell but he hasn't flipped the shell to find out yet.