The Oscar comes in different variations: tiger, red, blueberry, albino, and others too. Also known as a velvet cichlid, will eat about anything that will fit in its mouth, less likely to eat other small cichlids, than to eat small fish. As the Oscar gets older it digs around a lot, any plants should be either non rooted plants, or plants that are covered by decor, such as growing out of holes, or in a junction. Full grown they should live in no less then a 50 US gallon tank.
James, Fort Worth, Texas, USA

I have had a pair of Oscars for about 2 years and they are kept with a Red-Tailed Shark, Jaguar Catfish, Sailfin Plec and a Tyre Track Eel. They all get along fine. The Oscars are not aggressive at all only to each other.
Wilf, UK.

When people think of the Oscar they think of an aggressive fish. Yes they will eat feeder fish but when they grow older they get lazy. I have kept Oscars will many species and not many problems. Oscars are extremely messy and tank needs to be cleaned often. Oscar have personalities and can play with toys in the tank like a ping pong ball. Over time this fish will be able to take food right out of your hand.
Rob: Connecticut, USA