The male blue ram I had nipped the heck out of my 2 dwarf gourami's, and beat the crap out of a female I bought him and a bolivian ram. He left the tetras alone only because they were fast enough to get away when he chased them. But, also be forewarned.....blue rams are known to be hard to keep. I had started with a male, added 2 females 2 weeks later. Had to remove the females because he beat them up....lost 1 female shortly after...the 2nd female was thriving for 3 weeks in new (cycled) tank, all of a sudden one day was listless and died. About 2 weeks later the male did the same thing. All water parameters were fine, all other fish survived so I don't know if it was something that came in with the females that only the rams were susceptible to or what happened. I did try treating the females with melafix and pimafix after I separated them in case their was an internal bacterial infection and to help with the nipped fins, but lost them anyway.
