Yeah I agree a 125 is nowhere big enough for all these fish when they are full grown and actually I originally just set it up as a display for my Dovii pair. However a couple days ago I was in my lfs and noticed they'd gotten in the black belts. When I asked them how much they wanted for them, I was told if I took all 6, I could have the group for $70. The price was right so I decided to chance it. When I introduced them to their new tank they were recieved with very little aggression. Admittedly my Dovii male is on the laid back side especially for the species. I have had two slightly smaller males in the past that would routinely murder fellow tank mates and seemed to take great pleasure in it. It is interesting to watch the tank though because with the presence of such a dominant tank member all the black belts have taken up a sort of psuedo-schoaling behavior, where as in the store they were beating on each other pretty good. Well, I guess it looks like I have a good excuse to look for a real big tank now! Bummer Anyways thanks again for all the feedback!