Yeah, I wish I could say that they can live harmoniously and I'm sure in some tank they can but just with my experience, I'd rather not risk it. However, risking things is completely up to the owner of the tank
However, I do know that a single Ram can peacefully live with the girls, preferably a female ram but a male ram can do as well. But if you want a pair or more, I'd get a different tank.
Normally I would say go for it but after my experience with Ram's in a sorority...it hasn't been a good one. The Ram's are pretty much all around peaceful (I have 3, 2M 1F) but they've taken chunks out of my girl's fins and it's lead to more disease in my tank If you do want to continue, I highly suggest getting a proven mated pair and no extra. I wasn't aware that I was getting an extra in the bid but just make sure you tell the people if you buy from online. If you've got an LFS with proven bred Ram's then that should be fine. ALWAYS QT! I didn't with the Ram's and I wish I did. But otherwise yes, you can have Rams if you want.
Hey lilnaugrim, I got a question about my 37g sorority. I'm moving my 6 neon tetras to my 100g and I'm thinking about getting a pair of german blue rams tankmates for my girls. My water perimeter is great for rams: ph 7.0, ammonia 0, nitrite 0, and nitrate 5.0. Are GBR too aggressive for my girls or should I just leave as it is?