Tape a mirror to the side of the tank.  Both the Clownfishes and the Blenny should have such a strong distaste for conspecifics that they should be well distracted.  In the meantime, turn of the lights on the tank so the Hawkfish can relax a bit. 
		
	
		
		
		
		
			
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				~ Mindy 
 
SPS fanatic. 
			 
		
		
		
		
	
		
		
	
	
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