A  web·guide to sustainable development, conservation & the glocal environment



Diadromous life

Contents of this page:

     · Eels

       · Salmon

            ~ General

            ~ Atlantic

            ~ Pacific

Types of aquatic migration*

Diadromous: all fish that migrate

   between the sea and fresh


Anadromous: fish migrate from

   the sea up into freshwater to


Catadromous: fish migrate from

   fresh water down intothe sea to


Amphidromous: fish that migrate

   from fresh water to the seas, or

   vice versa, but not for the

   purpose of breeding

Potamodromous: fish whose

   migrations occur wholly within

   fresh water

Oceanodromous: fish that live

   and migrate wholly in the sea