I would not mix dif types of clownfish. I inherited a pair of fals perc clownfish from a friend who was tearing down a tank. Well since I already had a pair in my tank I put the other two in my sump. I went to the lfs
to pick up a black and white fals perc so I could add all three to the dt.( 3 so the aggression is spread amongst the new clownfish) so far about a month and a half in and all 5 clownfish are doing amazing. They formed new pairs. The single one hangs out with the group during the day and at night sleeps on the other side of the tank. The true test is when they lay eggs.