Last week my brittle star lost a leg-- I don't know where the leg is or how he lost it-- today my Orange linkia has a tip missing and another leg looks mangled-- does anybody have any suggestions as to how this happened? I have a small emerald green crab and a coral banded and a cleaner shrimp (who doesn't clean)--- Also I bout some acropora that seemed to have a very small reddish brown crab that hitchhiked but I only saw him once-- I couldn't get him out-- Other than that I have a convict tang-- Midas blenny-- and a cleaner wrasse-- oh yeah and a maroon clown-- I hitchhiker crab seemed to be about pea sized--