The Chinook Salmon (Oncorhynchus tshawytscha), also known as King Salmon, is the largest species in the Pacific salmon family. These impressive fish can reach lengths of up to 58 inches... The Chinook Salmon (Oncorhynchus tshawytscha), also known as King Salmon, is the largest species in the Pacific salmon family. These impressive fish can reach lengths of up to 58 inches and weigh over 100 pounds. Chinook are anadromous, spending their adult life in the ocean but returning to freshwater rivers to spawn. They are vital to local ecosystems and economies, supporting commercial fisheries and recreational angling. Chinook are known for their rich, flavorful flesh.Click here to read more about Chinook Salmon.