I just got my first two oscars. I was wondering if there is any type of special way they need to be treated. I got them in the 20 gallon now and the rest of the fish in the 10. They arnt that active esp. conartist the black one of mine. Psychopath is doing just fine. Just wanting some info so i can raise them to be big and strong and weird. So any advice on how to raise psychopath and conartist?