Currently I have 2 skunk/cleaner shrimp as cleanup crew. These guys are quite aggressive when it comes to feeding time. Scrambling fanatically, picking off food from coral tentacles and even digging into coral mouths to retrieve food. Are there any better behaved shrimps that doesn't terrorize the rest or any other alternatives that will perform the job w/o the aggression? I do have a decorator crab and another unknown crab... But u never see them come out to 'work' Cheers