Anadromous

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Anadromous

Anadromous (pronunciation: /əˈnædrəməs/) is a term used in the field of biology to describe a type of fish migration. The term is derived from the Greek words 'ana' meaning 'up' and 'dromos' meaning 'running'.

Anadromous fish are born in freshwater, migrate to the ocean (or sea) for a significant part of their lives, and then return to freshwater to spawn. Examples of anadromous fish species include salmon, trout, sturgeon, and eel.

Etymology

The term 'anadromous' is derived from the Greek words 'ana' (meaning 'up') and 'dromos' (meaning 'running'). It was first used in English in the early 19th century to describe fish that migrate up rivers from the sea to spawn.

Related Terms

  • Catadromous: Refers to fish that are born in saltwater, migrate to freshwater to live, and return to saltwater to spawn.
  • Amphidromous: Refers to fish that regularly migrate between freshwater and saltwater, but not for the purpose of breeding.
  • Potamodromous: Refers to fish that migrate within fresh water only.
  • Oceanodromous: Refers to fish that migrate within the sea only.

See Also

External links

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