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anadromous

anadromous

1 9.9
Fish that swim from the sea up rivers to lay their eggs
  • adjective
  • /ˌænəˈdrɒməs/
  • Specialized
: anádromo
  • The Nez Perce support free-flowing rivers because, without adequate habitat, anadromous fish fail to successfully reproduce and survive.
  • anadromous fish
  • anadromous salmon
  • anadromous species

Examples

  • In the spring, many anadromous fish swim up rivers from the ocean to spawn.

  • The earliest Aboriginal peoples utilized to some degree anadromous fish as a rich but unpredictable food source.

    Academic text (2005)
  • Artificial propagation has been used in one form or another with anadromous Pacific salmon for over a century.

    Academic text (1991)
  • "Increased growth is very important, particularly for anadromous salmonids," says Bilby.

    Academic text (1997)
  • Pink salmon spawn below the falls, but no anadromous fish occur upstream.

    Academic text (1997)
  • Protesters questioned the long-term survivability of wild anadromous fish in the Pacific Northwest.

    Academic text (2005)
  • Oncorhynchus tshawytscha are well established as anadromous and landlocked runs in New Zealand.

    Academic text (1994)
  • Warming also appears to be shifting the phenologies of anadromous fishes towards earlier spawning runs.

    Academic text (2009)
  • For countless generations, the Nez Perces harvested and stored predictable runs of anadromous fish.

    Academic text (2005)
  • Furthermore, the listing of anadromous salmon and bull trout as threatened or endangered under the ESA appeared to be imminent.

    Academic text (2018)

Synonyms

diadromous
vsanadromous
  • Specialized
1 9.9

Fish that move between rivers and the sea during their life

is a specific migration from sea into rivers to reproduce

Antonyms

catadromous
  • Specialized
1 9.9

Fish that live in fresh water and move to the sea to lay eggs

Surface Forms

anadromous positive

Morphology

anadromous = ana + drom + ous

Formed from Greek combining elements (ana- 'up' + drom- 'running') plus -ous; these scientific combining forms are not obvious to an average B1 learner, so the meaning is not derivable from familiar English base words.

Etymology

Anadromous comes from Greek parts ana- 'up' and dromos 'running', so it literally means 'running up'. It describes fish, like salmon, that move up rivers from the sea to lay their eggs.