Oscars are nice but I also had a Jack Dempsey and he had a lot of personality as well. The cool thing about big fish, especially the cichlids, is once they get big you can feed them all types of foods. I fed them mealworms, superworms, and even live insects: flies, crickets, etc. Of course, store-bought because you wouldn't want to give them any old insect you see flying around-lol!