(Oncorhynchus tshawytscha Latin Name) Tsiu Silver Salmon average between 10 to 12 pounds, with the largest weighing nearly 25 pounds. The Tsiu River offers Silver Salmon fishing from mid-August through mid-October. If you choose to keep your catch, your salmon will be cleaned, fillet, vacuum packed and frozen for your departure. With crystal clear water, an abundant Silver Salmon run, great accommodations will make an unbelievable fishing experience that you should not miss. Come on, give it a try!