I am eventually going to start a tank with bala sharks and I'm trying to figure out what I want to put with them. At the fish stores I've been seeing bala sharks in the same tank as pictus catfish. Now I went to this website and they said they're not compatible. I don't want to ask the fish stores because I was told before when I adopted my friend's daughter's black moor that I should get a shubunkin; come to find out it harrassed and attacked my black moor. I don't want to do harm to my balas so can anyone help?