Explanation of migratory nouns, explanation of migratory traceability, what is the explanation of mi

Migration is a special form of fish movement, which is the active, regular, directional, clustered, and horizontal movement of some fish with the characteristics of species.

There are many migratory fish, such as hairtail, large yellow croaker, small yellow croaker, herring, grass carp, silver carp, bighead carp, salmon, eel, etc. They migrate in different ways, some swim from one sea to another, some swim from the ocean back into freshwater, and some swim from freshwater to the sea. The purpose of migration is also different, some are for breeding, some are for food, and some are for wintering.

Small yellow croaker is a fish of the genus Yellow Croaker in the family Totoabaceae, and this fish that lives entirely in the ocean tends to be divided into multiple populations, each with a different migration route and does not mix. Usually during the breeding season, they swim in groups to the coastal waters of islands or inner bays, and in autumn and winter they swim to the deep sea.

Salmon is a cold-water anadromous spawning migratory fish. They usually live in the ocean, but when it comes to breeding, they swim back to the middle and upper reaches of rivers. It is worth mentioning that this fish has a certain adaptability to salinity, usually does not feed during swimming, and dies directly after spawning.

Eels are also migratory, but their migration routes, contrary to those of salmon, live most of the time in freshwater and swim into the ocean to spawn during the breeding season. Like salmon, they do not feed when they migrate, and after spawning, the broodstock die and the juveniles return to freshwater.

Not only grass carp, but also the four major fish have migratory characteristics, although they live completely in fresh water, they sometimes tend to swim from one type of water body to another, so they are also called semi-migratory fish. The reason for migration, in addition to breeding, may also be due to the need for overwintering.

The explanation of the words "migration" is:1Also made"Retrospective"。2.Strive against the stream. 3.By extension, it is to look back or push upwards. 4.Refers to swirling water.

The explanation of the words "migration" is:1Also made"Retrospective"。

2.Strive against the stream. 3.

By extension, it is to look back or push upwards. 4.Refers to swirling water.

Pinyin is: huísù. The phonetic pronunciation is:

The structure is: 洄 (left and right structure) traceability (left and right slag skin careful structure).

The specific explanation of the migration is what is the quarrel, we will introduce it to you through the following aspects:

1. Citations and explanations [click here to view the details of the plan].

See "Migration".

2. Network Explanation.

"Trace" is a network created by the wind **, published on the starting point network.

Poems about migration.

Title: Nagarjuna Temple: Carrying Heavy Migration

Verses about the regression.

The autumn water is traced back to the spirit of the millennium, and the spring breeze has been traced for thousands of years.

Idioms about migration.

Exhaustive source tracing tracing the flow tracing the source, tracing the source,

Words about migration.

Exploring the source and tracing the source, following the trace, blocking the source and tracing the source, tracing the source, t

Zhuyin one

Pinyin huí yóu

Basic DefinitionSome animals (mainly fish) migrate regularly along certain routes due to spawning, foraging, or seasonal changes. It is also used as a return tour. See "Seasonal Migration" and "Reproductive Migration" to clear the mess.

English (of fish) to migrate Chinese Dictionary Revised Version Migration Zhengbi 1 Some creatures in the ocean move regularly back and forth in a certain direction to meet their living needs, such as foraging and laying eggs.

1. Migration refers to the phenomenon that fish swim from one body of water to another due to the need for breeding, slag monitoring or wintering.

2. Migration is generally divided into four types, the first is complete migration in the ocean; the second is migration from the ocean to the middle and upper reaches of the river; the third is migration from freshwater to the sea; The fourth is to swim from one type of water body to another type of water body, but basically it is all freshwater.