Please help-odessa barbs male/female ratio-sexing

[Kelseytingler]

I have 3 (what I believe to be) Odessa barbs. Two look like this first image and the one looks like the latter image. Those are actually my fish lol. I plan to get more tomorrow but need to know what gender to get to complete the school. I removed (what I believe to be the male) from the 55 gal tank cause he was antagonizing the other two 24/7 so he's alone in a 10 right now. But now the other two (what I believe to be females) are nipping each other a lot. I'm confused on how to fix this issue and what the male female ratio should be, and if these are the genders I think they are? Thanks so much.

I have this one..male? Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
And 2 of these, female? Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting

Thanks again.
Also in this tank are 2 blood parrot cichlids.