Waterlife Vitazin is a multi-vitamin supplement, suitable for all fish. Vitazin is a blend of vitamins and amino acids, which stimulate good health, disease resistance and convalescence. Vitazin is also high is B12 which combats anorexia in all fish. Always read instructions fully before use. - Encourages a healthy appetite. - Encourages good skeletal and scale growth. - Replaces vitamins in the aquarium water. - Shortens the recovery time after an infection.