Mintail is not allowed to be sold because of overfishing of resources, ecological and environmental protection.

1, overfishing of resources: due to the delicious flavor and high nutritional value of the mentai fish, the market demand is high. Driven by profit, some fishermen overfished, resulting in a serious decline in the resources of mintail. In order to protect the fishery resources, many countries have imposed restrictions on the fishing and marketing of mentaiko.

2. Ecological environment protection: Mentai is a typical cold-water highly migratory fish, which requires high water quality and ecological environment. With global warming and the impact of human activities on the ecological environment, the living environment of the mentai fish has been damaged to a certain extent. In order to protect the ecological environment, restricting the sale of mentai fish has become a means.

Growing Environment of Mentai Fish

1, Marine Continental Shelf Area: Mentai fish mainly live in the marine continental shelf area, which has less wave action force, sufficient sunlight and flourishing benthic organisms, providing rich food source for Mentai fish.

2. Benthic layer: Menta fish live in the benthic layer of the water body, which is located at the depth of the near seabed, with an elevation range of -400 to -30 meters. Here they have access to adequate shelter and food.

3. Suitable water temperature: Menta fish like to live in the lower layer of the water body, the optimal growth water temperature is 25-32 degrees Celsius. When it is higher than 32 degrees Celsius or lower than 15 degrees Celsius, its growth will slow down significantly; when it is lower than 10 degrees Celsius, the fish will stop eating.

4. Suitable Dissolved Oxygen Level: Mentai need suitable dissolved oxygen level to maintain their normal growth activities. Generally speaking, the suitable amount of dissolved oxygen is 4.5mg/l or more. When the dissolved oxygen is lower than 2mg/l, the appetite of Mingtai fish will be reduced; when it is lower than 1mg/l, they will stop eating and float their heads.