We were gifted with a fish tank for our wedding. We had cichlids for a couple of years. We shifted to our new house and one fish survived and ruled the tank for a very long time. He died in early 2014 and after a lot of thought we picked gold fish. Again, just one survived. When it passed away, we weren't sure about keeping new fishes again.
Then, my friend, who's really passionate about aquariums, agreed to help me. He's set up a tank without the fishes but with a lot of plants, so the environment is set for the fishes whenever we get them. I'm hoping the experiment is a success. I'm still astounded by the amount of work he put in to setting up the tank and very impressed with his dedication.