Oh, sorry I wasn't clear on that - there are a total of about 9 rasboras (4 harlequin and 5 of the others) in the tank, 7 cories, 7 of the dwarf rainbows, and 2 of the male mollies. And the BN. Oh and one lone oto.
I'm getting the girl from a member here and I believe she'll be about 12 weeks old and coming out of a sorority of her sisters. I am not worried about her hurting anyone - I just want to make sure no one is gonna go after her.