
My Son's aquarium is a 30ga bio-Cube aquarium with a bunch of very colorful fish (gourami's, molly's and a pleco).
My wife really didn't like Connor's choice of fishes. She really wanted to get some rainbowfish. So we found a 75ga aquarium on craigslist, brought it home and set it up. Its still a work in progress, only having 6 fish in it right now, but growing.
These are pictures of the two aquariums.