What does the fish’s eighth second mean rebirth?

The memory of a fish is only seven seconds, so the eighth second is equivalent to the fish's rebirth, because the fish cannot remember anything.

Fish are mostly cold-blooded animals, and a few are warm-blooded animals. They breathe through gills and have jaws and fins. Existing fish can be divided into two main groups: cartilaginous fish (such as sharks, etc.) and bony fish (fish with linear fins and wavy fins). The fishes of both groups first appeared in the early Devonian period.

Extended information:

Fish nutritional content:

Rich in complete protein. Fish meat contains a large amount of protein, such as yellow croaker 17.6%, hairtail 18.1%, mackerel 21.4%, silver carp 18.6%, carp 17.3%, and crucian carp 13%.

The fat content is low and mostly unsaturated fatty acids. The fat content of fish meat is generally relatively low, most of which are only 1% to 4%. For example, yellow croaker contains 0.8%, hairtail contains 3.8%, mackerel contains 4%, silver carp contains 4.3%, carp contains 5%, crucian carp contains 1.1% bighead carp ( Fathead fish) only contains 0.9%, and cuttlefish only contains 0.7%.

Higher content of inorganic salts and vitamins. Both seawater fish and freshwater fish are rich in sulfur, as well as inorganic salts such as phosphorus, calcium, and iron. Fish also contains a large amount of vitamin A, vitamin D, vitamin B1, and niacin.

Reference: Baidu Encyclopedia—Fish