Doviis can be more aggressive, but in my experience, they just never seem to have the confidence to dominate.  A lot of times, if a dovii doesn't win a fight the first time it will give up despite sometimes being bigger and stronger.  A dovii with confidence will usually win the battle, but one without confidence will lose.  It depends on the fish, but that's what I think.
				
			 
	 
	 
 
		 
 
		





