I had a teddy bear (I think) crab come in on some LR. He started feasting on my corals. :scared: I got him out with a pair of hemostats. (what doctor's use to give/remove stitches) I also caught a bunch of emeralds this way, they don't seem to worry about the metal coming at them at all. Of course I had to hold them like that until they decided to let go of the rock. They have very strong little legs.