Question: what are oscar fish compatible with?
Answer: A few good examples include: Arowanas, Bichirs, Convict Cichlids, Firemouth Cichlids, Green Terrors, Jack Dempseys, Jaguar Cichlids, Sailfin Plecos, Severum Cichlids and Silver Dollars. As you can see, fellow cichlids are the most common tank mates since they can usually hold their own against an Oscar.