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From The Aquarium Wiki

Also known as Cyanocobalamin.

Contents 1 What it Does 2 Symptoms of Deficiency 3 Prevention 4 Links

[edit] What it Does

Maintains enzyme systems, cholesterol metabolism

[edit] Symptoms of Deficiency

Poor appetite, poor growth, lethargic, low red blood cell count (anamia) and dark pigmentation

[edit] Prevention

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.

[edit] Links

• Fish Vitamin Deficiencies - Identification & Treatment
• Nutrient Requirements of Fish by National Research Council (U.S.). Committee on Animal Nutrition
• Dietary vitamin deficiency in Fish
• Vitamin B12 - Wikipedia