In hearing that some of the cbs out there are eating fish and hermit crabs, I think that is very unusual. Cbs act like cleaners shrimp when they are small, and are less aggressive at it than true cleaners shrimp. Also, look closely at a cbs, it has 2 legs which have evolved to the appearance of filter fans. They use these to scan the substrate or whatever they are walking on for tasty morsels (they really like bristle worms, and since they usually are not on the bottom of the tank walking on the substrate, they're only removing them from the rocks, where you really don't want them anyway, because the next logical step is to climb up to your corals). Go to the store, find a male and a female (look for 2 that hang out together, or look for one with eggs), and take them home. If one starts losing legs, then you got 2 of the same sex, and it's time to get the damaged one out of there.
However, I guess anything is possible when you take something out of its natural habitat and shove it into a very small space. Wonder if mine will go werewolf on me.....
[ August 11, 2001: Message edited by: davelin315 ]