You could try, or trade them both for two smaller or larger ones form the same tank. Because the one you originally had was separated I think it has developed territory and it may be hard to pair it now.
It is my understanding with all types of clowns that if you put any two together that will get along one will eventually grow bigger and become the dominant female. Just remember IMO
maroons are the hardest of all the clowns to pair and most suggest only keeping one per tank unless you get a pair.
Also, you stated they are in a 10g QT
, but mentioned moving the decorations. Not sure what you have for decorations, but you may want to remove all decorations. Usually the best QT
tanks are void of all rocks and are bare bottom which works well if you ever have to treat the tank. A couple of pieces of PVC
work well for hiding places.
, what size tank are they eventually going into? And what kind of tank mates will they have? I only ask, because besides being very aggressive they can get bigger than the average clown. One LFS
I visit has an adult that is 7" plus. Most would suggest that maroons be the last fish added to an existing setup.