Oh no, my little devils fight like mad. Remember Black Photons are A. Percularis (not deemed the real name but generally accepted now). So they do have percula blood in them.
I get plenty of bickering even with smaller numbers in a 55g tank which has plenty of room.
If you think either of our clowns are bad try raising maroons, they bicker so much it often leads to death if you don't split them into smaller groups.
I did get a new spawn last night (missed the last hatch), but again they ignore the tiles and lay on the rocks (they actually moved the tiles off 4 times last night, even after the tiles were glued down).
Hopefully on the next spawn I can get them to lay on a removable rock rather than the 25lb rock they currently spawn on.