chinese demoiselle aggresive?

[Mark9]

I have one in my isolation tank, very playful, likes to hide in the rocks.
Is he aggresive?
Does not seem to be.

 

[Mark9]

Nobody knows?

 

[MacWilliams]

It is a damsel so more then likely it will be territorial. Whatever you add in there needs to be able to hold its own or use an acclimation box.