It could also be fin rot, which is due to poor water conditions. My Flame Wrasse had a bit of that when I neglected my usual WC schedule. Try doing a 30% to 50% WC and then feeding with vitamin enriched foods? 
		
	
		
		
		
		
			
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				It all started with ............. "Finding Nemo"
 
  
			 
		
		
		
		
	
		
		
	
	
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