1. Body structure diagram of squid:

2. Growth environment: Mainly distributed in tropical and temperate shallow seas, often swimming in groups in the ocean about 20 meters deep, active in In the middle and upper layers of the shallow sea, the vertical movement range can reach more than 100 meters.

It feeds on krill, sardines, silverfish, small male fish, etc., and is itself a prey of ferocious fish. The eggs mature in batches and are laid out in batches. The eggs are wrapped in gelatinous sheaths. Each sheath contains several to hundreds of eggs depending on the species. The number of eggs laid varies greatly among different species, ranging from hundreds to hundreds. to tens of thousands.

3. Growth chart:

1. Embryonic period: refers to the period from fertilized eggs to before hatching into squids

2. Larvae: refers to Squid fry just hatched from fertilized eggs until the yolk sac is absorbed and disappears

3. Squid fry: After 3 to 5 weeks of careful management, the larvae will grow to a 3 cm long squid.

4. Juvenile fish: squid whose fry have grown for more than 2 months and whose body length is more than 3 cm. At this time, the fish's body development is basically formed, the characteristics of each fin are more obvious, and the body color gradually becomes brighter. Only the gonads are not yet mature.

5. Adult fish: After cultivation, the gonads of juvenile fish are fully mature and secondary sexual characteristics appear during the breeding season.

Extended information:

Nutritional value:

1. Squid is rich in calcium, phosphorus and iron, which is beneficial to bone development and hematopoiesis, and can effectively treat anemia< /p>

2. In addition to being rich in protein and amino acids needed by the human body, squid also contains a large amount of taurine, which can suppress cholesterol levels in the blood, relieve fatigue, restore vision, and improve liver function

3. The peptides and selenium contained in it have anti-viral and anti-ray effects

4. Professor Wang Cunxin of the Institute of Oceanology, Chinese Academy of Sciences said that cholesterol can be divided into low-density and high-density. The cholesterol in squid Mainly high density, it is beneficial and harmless to the human body. The structure of the fat in squid is obviously different from that of livestock and poultry

5. Contains protein, omega-3 fatty acids, copper, zinc, B vitamins and iodine. B vitamins help relieve migraines, and phosphorus helps calcium absorption. 100 grams of squid has only 70 kcal of energy. Note: Do not eat more than one fistful of squid per day, and it is best not to fry it when eating.

Reference: Baidu Encyclopedia-Squid