Malachite green is a chloroform green dye and a bactericide, which is easily soluble in water. Farmers often use it to prevent fish from water mold, gill mold, melon disease and so on.

Because malachite green has high toxicity, high residue, carcinogenic, teratogenic and mutagenic side effects, Announcement No.235 of the Ministry of Agriculture of China, Maximum Residue Limits of Veterinary Drugs in Animal Foods, clearly stipulates that malachite green is prohibited from being used in all foods, and it is included in the list of non-edible substances that may be illegally added in food and food additives that may be easily abused in China.

Matters needing attention in the management of fresh aquatic products

1, pay attention to the water quality. The water quality requirements for aquatic products are also relatively high. It is best for merchants to replace sea crystal with tap water and put it in tap water for more than 10 hour to remove impurities in water and provide a better living environment for aquatic products. In addition, many merchants will use sodium thiosulfate to purify chlorine in tap water. In fact, some sodium thiosulfate has great toxic and side effects on tropical fish.

2. Support conditions. It is a very important link to prepare fresh food and feed in supermarkets. Of course, when feeding aquatic products, it does not mean that the more oxygen the better. If too much oxygen is injected into the water, the oxygen pump will easily emit strong gas, which will punch aquatic products to death and cause losses. Therefore, businesses must pay attention to the amount of support when supporting.