Fish migration
![Many species of salmon are anadromous and migrate long distances up rivers and streams to spawn](/Images/godic/202412/20/Jumping_Salmon4356.jpg")
![Ocean migration of Atlantic salmon from Connecticut River[1]](/Images/godic/202412/20/Ocean_migration_of_Altantic_salmon4357.gif")
![Migration of Icelandic capelin](/Images/godic/202412/20/Capelin-iceland.svg4357.png")
![The high seas, highlighted in blue, are the seas which are outside the 200 mile exclusive economic zones](/Images/godic/202412/20/Internationalwaters4357.png")
Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousands of kilometres. Fish usually migrate to feed or to reproduce, but in other cases the reasons are unclear.