My experience is this:
You can add another type of clown.
That other type of clown will have an accident with he Maroon. Most likely the Maroon will win and you will have another dead clown on your hands.
Really nice looking fish the maroon, but very territorial, to this end he will seem quite mean. And he is.
In other words chances are the maroon will kill the other clown, been there, seen it, done that.
Thomas