Metaphors for canned sardines include:

1. "Squeezed into a can of sardines" is used to describe the subway and buses during rush hour, describing the crowded state. Sardine cans look delicious Because of the small size of sardines, when made into cans, the body of the fish can be preserved intact and neatly arranged, which visually creates a crowded feeling.

2. A metaphor for people who leave their comfort zone when they are comfortable with the status quo. Catfish effect exists, mainly from the sense of freshness, strangeness, security and crisis, which is a biological **** have psychological activities. It's like catfish and sardines. When the catfish came to the sardines, look up, and did not find their own similar partners, the heart of the oil rose a sense of strangeness, worried about their own safety.

Life habits of sardines:

1. Sardines are offshore warm-water fish, generally not seen in the outer sea and the ocean. They swim quickly, usually inhabiting the upper and middle layers, but in the fall and winter when the surface water temperature is low, they inhabit the deeper sea area. Most sardines have temperatures of around 20 to 30 degrees Celsius, and only a few species have lower temperatures, such as the Far Eastern sardine, which has temperatures of 8 to 19 degrees Celsius.

2. Sardines mainly feed on plankton, which varies according to species, sea areas and seasons, and also differs between adults and juveniles. For example, the adult golden sardine mainly feeds on planktonic crustaceans and also diatoms; the juvenile sardine also eats diatoms and methanogens in addition to planktonic crustacean larvae.

3, the golden sardine is generally not for long-distance migration, autumn, winter adult fish in the 70 ~ 80 meters outside the deep water, in spring, the coastal water temperature rises fish to the near shore for reproductive migration. In the spring, the coastal water temperature rises and the fish stock migrates inshore for reproduction. The youngsters and juveniles grow up along the coast for bait and gradually migrate northward with the warm current of the South China Sea in the summer. In the fall, the surface water temperature drops, and then migrate to the south.