I used to have a beautiful fish tank. I had all kinds of Fresh Water fish (don't worry, we did our research and made sure they wouldn't kill each other
). We got little statues and things to put in the rocks, plants, and the whole backside had this mural of fish that I tapped on. My favorite fish were to Beta Sharks I had - Their names were Kiko and Flip.
Sadly, all my fish died and the tank started leaking so that was the end of that.
One day, I hope to have a salt water tank. In my cousin Lynn's basement, there are like 15 little aqauriums built into the wall. It is SO cool!
Good luck to you!