Re: H. azureiventris
I used to keep a group of 7 with, i believe 2 females.
My opinion is that you should leave them be, give em plenty of film cans mid height in tank, and a big/good water feature, and then keep tank wet.
they should breed like crazy. Several of mine would hang together on their roosts, but i dont recall that many anyway.
good luck, but i say leave em.