I would also consider shapes also. I know for a long time I`ve had a yellow tang and a yellow eyed kole tang and they have neen best of buds for about 8 yrs now. Different color and different shape. Now when I added the scopas tang which is different color but same body shape the first few weeks were very shaky. That`s why I dont think color alone will do it. The yellow and scopas get along now after 4 yrs but I was wondering those first few weeks. Here they are.
