In my experience, if the anthias are healthy and growing, you are going to end up with 2 males no matter what if you have 3 or greater females. I originally started with 4 females and 1 male. After 2-3 months a female turned and I had two males and 3 females. Fast forward about 5 months, and one of the males jumped out leaving me with 1 male and 3 females. 3-4 months later a female morphed, once again leaving me with 2 males, and now 2 females. They lived together for about a year in a half before one of the males decided he had enough with the other male, and he killed him one day. This left me with 1 male and 2 females and I didn't have any others change on me in the next year in a half before I had to give the trio up. Long term I don't think anthias do well in groups of greater then 3.