That may have something to do with it. blennys and dragonettes need an established setup usually over 6 months of age to build up a supply of copepods. . Which they were most likely eating in liu of misis .No copepods no copepod eating critters. 
		
	
		
		
		
		
			
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				There’s two fish in a tank. One turns to the other and says 'You man the cannons, I’ll drive’
			 
		
		
		
		
	
		
		
	
	
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