This guy is very reclusive and thus far has been impossible to photograph, he hitchhiked in on a mushroom coral I got the other day. He almost looks like a cross between a starfish, crab and spider. With outstretched legs he is almost the diameter of a nickel, and appears to have pincers positioned like a crab, but his legs are more like a star fish. He is brown with a little green in color, and pretty much stays in the holes of this coral. He looks awfully small to be damaging now, but was wondering about him. He really does not fit the description of any of the photos I have in my invert id books. I know it is near impossible without photos to id, but anyone have ideas?