I’ve seen numerous aquariums.
One thing that has always bothered me has been why these aquarium owners don’t add a background to their tanks. If you want to really give that impression of a snapshot of fish in their natural habitat why is there a white wall behind the tank? There are plenty of back ground panels available for any type of habitat you are looking for. These panels or posters are easily installed and are relatively cheap. They can really enhance the look of your tank. Get rid of that plain wall behind your tank. Your tank admirers will like it and your fish will thank you for it too!