My Pseudotropheus Acei "Ngara" Whitetail have mixed with my blue cobalt. I have 2 Acei holding as well. I thought of it as a little strange. I wasn't accually planning to breed any of these fish yet, I just wanted them for show in my front room just for now. My question is.... should I keep them? I have always been told "there are to many mix breeds, exc.", but I want to know what people here think on this.