Anadromus Char.

 

The sea Arctic char differs from the landlocked variety in that it migrates to the sea where it spends part of its life.

The sea Arctic char travels down to the sea in spring or early summer, spends the summer in the sea, and then returns to fresh water in late summer or early autumn. The larger char are the first to make the sea journey in the spring, while fry making their first migration tend to travel later.

Research has shown that Arctic char generally stay close to the shore while at sea. The char returns to fresh water every year, running from mid July to September. The first to run up the rivers are the char which are returning to spawn in the autumn, while immature fish return later. Sometimes sea Arctic char have to travel long distances upriver to spawn in fresh water.