Im curious if blue and green are similar in regards to temperment.. i would potentailly like to add one of each! I have a 65 gallon display over 100 lbs of liive rocks between my sump ( fuge) and display.. hmm
I would imagine they are the same but I don’t know for sure. As long as you have enough space for them to set up separate territories you should be fine. If the tank is small then two males can fight as I understand it.