Squid, squid, also known as sentence male, soft fish or squid, is a cephalopod of mollusks, which manages squid. The body is slender, long and conical, with more than a dozen wrists, two of which are longer. There is a sucker at the front end of the wrist, and there is a horny toothed ring in the sucker. When preying on food, wrap it around your wrist and swallow it. I like to get together, especially when mating and laying eggs in spring and summer. China first recorded squid in the Tang Dynasty.

Squid lives not too far from the coast. Every spring when spawning, groups of squid swim to the shore to lay eggs. Eggs are wrapped in a rod-shaped transparent colloid sheath. There are often many rod-shaped egg sheaths attached to rocks or other objects at the bottom, which are shaped like a white flower and very beautiful.

The reproductive migration of squid is obviously affected by temperature. The surface water temperature of Japanese squid spawning population is about 65438 03 ~ 65438 06℃, and that of China squid is 22 ~ 24℃. Species are generally divided into three breeding groups: spring group, summer group and autumn group, and their living habits are different. Mature eggs, mass production. Eggs are wrapped in colloidal transparent rod-shaped egg sheaths, each egg sheath is wrapped with several to hundreds of eggs, and individuals lay hundreds to tens of thousands of eggs; Many egg sheaths often gather together, similar to long petals. Most eggs are scattered on the seabed or attached to other objects.

The incubation period varies from species to species. For example, it takes about 65,438+0 months for Sepiella maindroni, while it takes only about 8 ~ 65,438+06 days for China squid, so the water temperature has a great influence on the incubation period. The hatching rate is very high, generally reaching 70 ~ 80%. The hatched larvae are similar in appearance to their parents, and can swim back and forth in the water layer with the help of funnel spray to grab food. Larvae grows very fast, and it can grow to be close to the trunk length of its parent in about half a year. In the second year, the gonads are fully mature and return to the sea where they were born to mate and lay eggs. Parents died one after another after breeding, and the life span was mostly 1 year.