I would strongly advise against it. I was combining two aquariums and I added my false perc mated pair into the new big tank at the same time as my tomato clown from another tank, and as soon as the tomato saw the other clowns, it went after them relentlessly for a couple of hours, with no let up in sight, so i pulled out the tomato and placed him in solitary confinement in my backup 20 gallon. I can't say he's all alone, i did buy him a bi color blenny and a watchman goby to keep him company. Now the smaller bi color blenny pushes the tomato around, it's a fairer matchup i think.
125gal. megaflow. Fish Residents:
Yellow Tang -(Junior), Flame Angel -(Flamey)
Bicolor Blenny -(Butch), Randall Jawfish -(Jaws)
Lawnmower Blenny -(Lenny), Talbot's Damsel -(Dottie), Tomato Clown -(Ketchup)
Nameless fish include, Neon Blenny, Singapore Shrimp Goby, Yellow Tail Damsel, 1 Skunk Cleaner Shrimps, purple pseudochromis.