Hi, I have a discus and angelfish tank and I know that they are 'generally' peaceful. I don't really have problems with any of them except that occasionally one of my bigger discus' will terrorize the smallest one I have, which I bought a few weeks ago. It's not constant, but it's enough to concern me. And, of course, it's worse at feeding times, which makes me think it's just a hierarchial problem. Will the big discus lay off once his dominance is established? Or should I separate them? I have a 58 gallon tank by the way....