Fish Diseases and Management

6.1.4.2 Water-soluble vitamins

Thiamine(Vitamin B₁)

Thiamine is a coenzyme of many essential enzymes catalysing carbohydrate metabolism. It is essential for digestion, reproduction and central and peripheral nerve function. Clinical signs of thiamine deficiency include change of colour and haemorrhages at base of fins, but the most frequent aberration is hyperexcitability with paralysis or aberrant swimming.