Ecological forms of Sakhalin taimen
On all area the Sakhalin taimen has 3 ecological forms:
The semi-anadromous which is leaving for feeding in sea near coast, but not departing far from mouths of the rivers.
Lake or lagoon's, migrating within fresh and saltish waters.
River, carrying out all life cycle in the large rivers.
There are also purely freshwater populations living in the reservoirs which are cut off by dams and in the rivers flowing into them. Perhaps, only in the Russian part of an area, such blocked population exists in the lake Taynoe near Kholmsk in the southwest of Sakhalin.