These guys can get pretty agressive. Had five living together for a number of years (two males and three females) but never breed. Over a couple of month lost one and had to seperate all but two which are living together with a coloney of E.Yellows. They breed about every couple of month spitting out 3-4 fry.
Go figure ah :-?
Alot of people recommend 12 plus in a group but read on the net somewhere that a breeder only breeds from groups of two or three for all his tropheus.
My Ikolas are in a pack of five doing well. The Tropheus Brichardi where in a group of four, breed two times with 12 fry, but now all separated. Duboisi yellow bands in group of 12 and whites in two. The bulu points, Ive given up. They must be the most aggressive B*#$ ive ever had.
The best thing ive found is a large tank, lots of rocks and very dense planting (plastic). Give the females a chance to hide.