how many males/females did you have? my tank is roughly 473 liters.
-edit--
from what I've seen, the males are blue and females are orange....my lfs only has males...I'd have to see if they can get females or order some from somewhere else.
2 and they were both blue
a 473 litre tank...WOW..very nice
its totally up to you, but even in a tank that big, these fish will cause you trouble..its what they are all about
again, i can only speak from my experience, i have many diff types of malawi , and rest all seem A ok...but these....never again
research ALOT regarding these fish , and choose tank mates wisely, and you may be ok
I honestly believe , that although a particular the species on the whole are either midly or aggressive , fish themselvs do have their own nature, and you wil lfind some that are apparently KILLERS..can be quite chilled.
again..
its your tank, all i can say is RESEARCH..
