Removing Decorations To Decrease Aggression?

I recently read that by taking out a lot of the decoration from my African cichlid tank, (mostly Mbuna, a few peacock and a hap,) it can decrease aggression because there’s no territory to fight over. Is this true? It’s already not much aggression to begin with but I just added two of the peacocks yesterday and the red empress is fine but the sulfurhead is stressed in the corner still. He did eat though. Any suggestions? I know you should keep Mbuna and haps separate because of aggression but the peacocks are 3 of the biggest fish in the tank and don’t get picked on

 

If there are no sight breaks the tanks becomes one territory and likely will have the most dominant fish cornering the others.

 

I just went over this same thing on another thread, Mcasella is say what seems to be concencis
Overstocking For Agression

 

I just went over this same thing on another thread, Mcasella is say what seems to be concencis
Overstocking For Agression

I just picked up an overstock 60 gallon with 42 fish in it (8-9 bottom dweller including plecos, and synos), with 32 cichlids including frontosa, flowerhorn, parrots, and africans. The only decor in the tank was some large rocks in the bottom, no actual sight breaks. Most of the fish had torn up fins.

 

If there are no sight breaks the tanks becomes one territory and likely will have the most dominant fish cornering the others.

That makes sense too