im fixing to break down my aquar. and wash it, clean it, and i want to set it up for some different types of fish. i need some ideas on the types of fish that are easy to care for (no guppies, i love them but not today. lol) and that do not need an over abundance of attention. this is a freshwater tank, it 75 gallons. i love chinchillas but i dont want to get rid of my rocks and trade it for sand. i was actually thinking about oscars...maybe. i want fish with color but i dont want to pay a fortune for them.....any ideas would be appricated.