I'm currently based in Singapore (a tropical country), so maintaining the appropriate temperature on a regular basis isn't really going to be much of an issue. However, I understand that angelfish are supposed to be less resistant to disease than most other cichlids due to rampant inbreeding practiced within the trade. Would this make it difficult for me to keep one in an outdoor pond (albeit a pond that is equipped with a filter and oxygen pump ). If angelfish are indeed too fragile to keep in an outdoor pond, are there other alternative cichlid species that I could try my luck with? Thanks in advance