, i put my ice blue in there, (same length but easily twice as big) and hes not putting up with the auratus's crap, i love my ice blue hes like a golden retreiver lol, he always does what i want, and hes always the first to the front of the tank if im near. but it kinda makes me second guess putting him in the 55, im really happy with the pecking order i have right now, + the 2 i have with the auratus are 2 of my biggest mbuna. heres another vid with my ice blue letting him know whos boss, sorry utubes bein ***, and it wont give you the high quality option