How cool! A fish tank merged with a pot plant. I am more of a dog person, but this is simply awesome. While visually pleasing a lot of people would be quick to point out that the actuality of this is improbable but the premis is rather delightful. Living in harmony with each other the fish basically poops out its eaten food which is essentially nutrients for the plant, and the water the plant receives gets filtered on its way to the fish. Magic.