Pink salmon have primarily been used as a commercial canning food product and is the smallest of the Pacific salmon. The adult males can be distinguished by the pronounced hump that develops prior to spawning. Native pink salmon are found throughout the Nooksack watershed. In odd-numbered years (e.g., 2003, 2005), two-year-old pinks enter the system beginning in July and spawn from late August through October. The young fry return almost immediately to the ocean.