so I have a young Gold Nugget in my 45 gallon and have a pair of the platinum and midnight. they pair have out grown their reef tank and would like to move them in with the gold nugget. yes or no? all of the fish are the exact same size. the gold nugget did become very territorial with the lightning maroon it was in with at the aquarium store and shredded its fins slightly. however they were in a considerably smaller tank than the one i would like the other two to be apart of. I was thinking a tank divider for the first couple weeks ?