One can easily keep a fish tank at their home, as it doesn't occupy much space. Moreover, we have studied various usefulness of keeping the fish tank in their house. All your worries, sadness, chronic disease will be alright. The movement of the beautiful fishes moving around the water gives your eyes a soothing effect. In Feng Shui, it is believed that you will have a good day if you see the fish tank in the early morning.