anadromous fish的意思|示意

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Anadromous fish, a special species of fish, are those that migrate from salt water to fresh water to spawn. These fish migrate in order to locate areas where conditions are better for spawning.

Anadromous fish are often referred to as “run” or “run-fish”, because they make long spawning runs up rivers, streams and other freshwater areas. This process is called anadromy, which comes from the Greek words anadromos, meaning “running upward”.

The most well-known of the anadromous fish are salmon and sturgeon, although many other species like shad, lamprey, eels, and striped bass can also be included in this category. These fish generally stay in the ocean for most of their lives, then migrate to fresh water to spawn. Once spawning is completed, the fish will often return to the ocean to feed and grow.

In order to assist in anadromous fish conservation, many countries have implemented regulations to protect these fish and the habitats they migrate through. Laws concerning fishing, water quality and sediment management in rivers and streams are all part of a larger conservation effort. Research is also being conducted to better understand the complex behavior and natural history of anadromous fish species.