Here's what I would do,contingent on the fact that this is a well established tank,full of
live rock,and the Maroon isn't over 2" already:
All fish need to be simultaneously introduced.
Have your new inhabitants waiting in bags from the
LFS.I'd suggest 2 or 3 of the following fish:Small Niger Trigger,Flame Hawkfish,Bi Color Blenny,Spotted Watchman Goby.While you're there,ask for an extra bag & rubberband.
The key is to have a game plan,because the clown has to come out for this to work.
Set up 2 clean buckets. One for the clown & one for some of the
live rock that needs to come out if necessary.
One more bucket full of freshly made salt water to replace what comes out in the process.
Siphon out a couple gallons of tank water,catch the clown,place him in this bucket.
Rearrange the rockwork in the tank.
Bag the clown and
acclimate all the fish,float method.
This may or may not be what you had in mind,I'd really like to see a pic of the tank sometime!!
