Other languages:

Catadromous fish

Catadromous fish live parts of their life in freshwater and parts of their life in saltwater.

They hatch in deep oceans, then migrate to freshwater and return back to the ocean when it is time for them to spawn. Well-known catadromous fish species are eels, especially the critically endangered European eel.

As adults, they make one long migration to the Sargasso sea in order to spawn only once before they die in the ocean. To recap: catadromous fish migrate from the ocean to freshwater, and back to the ocean.

Anadromous fish do the opposite. They migrate from freshwater to the ocean, and back again.

Life cycle of eel, a catadromous fish

Photo: Salvor Gissurardottir, CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0), via Wikimedia Commons.

Polarpedia terms are created by EDU-ARCTIC Consortium, which holds responsibility for quality of translations in following languages: Polish, French, Danish, Norwegian, German, Russian, Italian, unless indicated otherwise. If you see an error - please contact us: edukacja@igf.edu.pl.
European Union flag This project (EDU-ARCTIC) has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 710240. The content of the website is the sole responsibility of the Consortium and it does not represent the opinion of the European Commission, and the Commission is not responsible for any use that might be made of information contained.
Designed & hosted by American Systems Sp. z o.o.