I think that the pistol shrimp shown in this video is not generally the kind we get in the aquarium trade. 
 
I have a pistol goby pair in my 16g nano with a peppermint shrimp and a pom-pom crab and both are fine with the co-habitation.  I think the pistol there is a much more agressive kind.  Mind you, I do make sure to feed my tank and I don't want any of my critters looking like lunch anytime soon. 
		
	
		
		
		
		
			
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				Mark...
  
290g Peninsula Display, 425g total volume.  Setup Jan 2013.
			  
		
		
		
		
	
		
		
	
	
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