From The Aquarium Wiki
Also known as Cyanocobalamin.
What it Does
Maintains enzyme systems, cholesterol metabolism
Symptoms of Deficiency
Poor appetite, poor growth, lethargic, low red blood cell count (anamia) and dark pigmentation
Feed your animal at least three different types of food. This will ensure it gets adequate supply of this vitamin.
- Don't use old food. Vitamins decay very rapidly once exposed to the air, heat or being frozen. Try to feed food that is no more than 6 months old.