Anadromous, returning to natal rivers. Gravelly area in current.. Females produce 8,000 - 26,000 eggs. Juvenile salmon (parr) spend most of their freshwater life in shallow riffles; At length of 12 to 15 cm, transform to smolt and migrate to sea. Speed of growth slower in northern part of range.
Bigelow, H. B. and Schroeder, W. C., 1953; Page, L. M. and B. M. Burr, 1991; Billard, R., 1997; Drummond Sedgwick, S., 1982.