actually I've been looking into fancy goldfish a lot lately; more specifically, the Oranda goldfish.Well fed fed goldfish are great, I wish I could afford to feed more than just pellets and bloodworm.
Flowerhorn, Oscars, Dempsey fish and so on are good.
If you dont want to jump into asian aros look into silver or jardini aros they are great, and if you are looking for a challenge get an african aro.
Because of its size, it's like the embodiment of both worlds.. beauty and the beast, with its body size and elegance.