Brown Trout

 

 The brown trout either spends its entire life in fresh water or migrates to the sea after spending its first years as fry in rivers or streams (sea trout).

Like the salmon, the brown trout spawns in running water. Landlocked brown trout can either spend their entire life in running water or move to lakes while still at the fry stage. The adult fish later returns to running water to spawn. In Iceland, lake-dwelling trout are found mainly in the Veidivötn lakes in the south central highlands and in some of the lakes on Arnarvatnsheidi heath. Brown trout are also found dwelling side by side with Arctic char in a number of lakes, e.g. the large brown trout in Lake Thingvallavatn.