Maroon Clown attacking larger Queen Angelfish

[farmerk]

I have had a 200 gallon tank with the same fish for over a year. Last week I noticed damage to the sides sides of the queen angel and today I noticed one that my maroon clown was being very aggressive and biting at the sides of the Angelfish.
Any advice? This is the first time in 12 months of the queen angel being in the tank that anything like this has happened. I am concerned as I dont want the angel to get killed.

 

[btldreef]

Maroons are mean. Your maroon might just now be reaching sexual maturity which means she's a mean female Maroon, as many are.
You can attempt to rearrange some rock work to help break up the aggression, or you may need to get rid of the maroon.