When I went to my LFS
a couple weeks ago, they only had female german blue rams... I picked up a couple with the intention of adding more later, but I wanted to check if there was any suggested method of introducing additional members to the group now that the two have settled in. The two girls are total best buds and have even grouped up to shoo off my full grown Red Tail Black Shark when the shark was trying to be a little too pushy, so I don't want to have them bullied too badly by any new additions or vice versa.
Any suggestions on the best gender ratio and introduction methods to minimize stress/confrontations? I seem to get conflicting info all over the place on the best ratio of males to females, but ideally I'd like at least a couple pairs... Any help would be appreciated!