Traditional Culture Encyclopedia - Traditional stories - What does this fish symbolize?
What does this fish symbolize?
Extended data
Fish live in various ways. Most fish live in fresh water or seawater. Less than 65,438+00% of fish spend part of their time in the ocean and the other part in fresh water. They migrate back and forth between two habitats, which is called migration. If it grows in the ocean but needs to breed in fresh water, it is called upstream migration (such as Chinese sturgeon), and if it grows in fresh water but needs to breed in the ocean, it is called downstream migration (such as eel).
If the fattening and breeding migration occurs between rivers and lakes, it is called semi-migratory fish, usually fattening in lakes and laying eggs in rivers (such as the four major fish). There are also some fish, whose lives are limited to the main tributaries of the river and they only migrate for a relatively short distance? .
There are many reasons for fish migration, first of all, it is influenced by external conditions. Fish live in water, and their activities are influenced by factors such as temperature, current and salinity. But migration is mostly caused by changes in water temperature. When the water temperature changes, fish have to find an environment suitable for survival, which leads to migration. Because the lateral sensory organs on both sides of their bodies are particularly sensitive to the stimulation of water flow, they can help fish determine the speed of water flow and identify the direction.
Reference: Fish _ Baidu Encyclopedia
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