I have 4 clowns all about 3 years old. They all swim together and are big. Two are true misbar percs and two are black and whites. One true perc is larger than the other and one black and white is larger than the other. The smaller true perc is larger than both black and whites and I have seen both percs sticking together and one perc and one black and white sticking together so not sure who is doing what. There were all together as juvis and all still get along. I want to separate into two pairs and see if I can get them spawning. Any suggestions?