Thanks, guys.  That is indeed the same goby that I have.  I have never seen it eat any coral polyps.  It will wander the tank and forage for food, but always returns to that colony for shelter.  I hope I don't have to get rid of it.  Rich.  
P.S.  Thanks for the zoos, Alan.  They are really taking off now.
   
		
	
		
		
		
		
			
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				90gal Starfire mixed reef, 400W MH (Giesemann 13K megachrome/Icecap E-ballast), (2) 54W T5 Giesemann true actinic, 45gal sump (65W 50/50 PC), ASM G-3 Skimmer, Mak 4 return, Sequence Dart closed loop, foam backdrop, 120 lbs LR, 2" sandbed, & 1 dillhole running the show.
			 
		
		
		
		
	
		
		
	
	
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