Fish Tank Headboards

Gold fish problem in my oriental themed room?
So my room is painted purple, with two cherry blossom trees. They’re black trees with pink flowers (I worked hard on them lol). I have a really simple black bed frame, no headboard. My ceilings are white and so is the baseboards in my room and door frame. I have 4 paper “ball” round like lamps that hang from the ceiling and I have a small buddha statue and two small bonsai trees. I also have a small table top oriental like fountain.
I want to put goldfish in my room, I love goldfish but I’m afraid a standard tank will look terrible in my room. Also I want to avoid salt water fish as they’re expensive. Can anyone give me ideas on what to put the goldfish in that will fit in my room and its theme? And also what kind of goldfish will go with my oriental theme? I grew up with goldfish and I absolutely love tne, please help. Thanks
http://www.thewallaquarium.com/wall-aquarium,wall-and-fish-bubble-aquariums.php
Something like this would work well with the round circles you have in your decor and a gold fish or a betta would do well in one of these.
55 in wall reef