The overall look of an aquarium is mostly pleasing to the fish owner‘s eyes. I speak from personal experience. The very first aquarium I had for my little goldfish was round, but well, just round. There was nothing fancy about it.
At that time there weren’t may different models of aquariums available and my goldfish was happy enough with his small aquarium. He entertained himself by producing bubbles and then chasing them all over his little fish tank.