We found our 20 gallon fish tank about 5 years ago, sitting outside the house where we had an apartment. It had been sitting for several weeks outside the apartment that had apparently been abandoned by our former neighbours in the night. The tank was so green I just assumed that nothing could live in there, but one day I passed by and saw a flash of orange. Sure enough, there were goldfish - alive and well, and they had been living off the green algae for several weeks. My husband and I decided that instead of leaving the fish out in the rain in their dark green prison, we'd bring them into our tiny place and clean their water and feed them proper fish food. When the water cleared, we discovered that there were three large goldfish. One of them is still alive today.
