Beautiful Black Moor Fish looking for a new home

I have a very lovely and very healthy Black moor goldfish. He is about 2-3 years old and fairly large, about 5" long. He is in excellent shape, and has not ever had any medical problems. The only reason that I would like to get him out of my tank is that I have three other goldfish and this black moor likes to bother two of the other fish as he chases them often about the tank. So if you have a tank that can fit him and want to see if he can behave himself better with your fish, then you can have him! I was told by a friend that sometimes when a fish that likes to chase other fish is put into a different tank with new fish, that in the hierarchy of the fish world, they will then be the fish that is more likely to be the one chased....so perhaps we can change his ways!