One of my favorite fish is the ZEBRAFISH. They're cute and they swim far faster than goldfish.
Recently, I bought a new big tank for my fish. Now, I'm maintaining 2 fish tanks. Maintaining an aquarium is not a pain in the b**t. Nope, not at all! I only change filters once a month, and have my bottom feeders and janitor fish cleans the inside for me...lol!