Why can't moldy feed be fed to fish?

Moldy feed is caused by mold. When the temperature and humidity are suitable, such as the temperature is about 25℃ and the water content of feed is above 13%, the mold in feed will multiply in large quantities, leading to mildew in feed. Therefore, feed is prone to mildew in rainy season. In addition, poor ventilation, damp warehouse, water leakage and the mixture of dry and wet feed are all causes of feed mildew. In feeding management, too much feeding, too long accumulation time and long-term failure to clean the feed trough will also lead to feed mildew. The main hazards are: reducing the nutritional value and palatability of feed, affecting the storage, transportation and use of feed and affecting the growth of aquatic animals.