Co-existance of two pair of perculas?

[DOO-E]

Well According to clownfish by joyce D wilkerson Perc have been known to fend off maroons. So unless you are willing to tear down your rock structure looking for these 2 fish that are getting the crap beat out of them i wouldnt. On the other hand if your one pair is on one side of the tank and your new pair is on the other with a new host i think it might be fine.