Best number for Anthias

I'm going to get myself some Anthias, Barttlet , because they're smaller and i can get a better number of them in my 150 reef.

What would be a great number, i was thinking 1 male and 6 female.

Is their something i should know about them, i know if the male dies the biggest female will change but other than feeding them 4-5 times a day, i'm not familiar with them.