The peaceful nature and attractiveness of an aquarium (fresh or saltwater), has been shown to significantly reduce stress and blood pressure levels. Even gazing at a decorative fishless tank has proven to assist in reducing stress and high blood pressure. Even greater improvement is found in individuals who have watched fish-filled aquariums. Various studies have shown that those who have spent a little time each day watching fish, have greatly reduced stress and blood pressure levels. The more attractive your tank is, the bigger the health benefits will be.