Oncorhynchus tshawytscha; the largest species of the Pacific salmon, also commonly called "King." Typical adults weigh about 22 pounds (10 kg) and are 36 inches (91 cm) long, but chinook from some runs can exceed 100 pounds.
The Chinook salmon (Oncorhynchus tshawytscha) (derived from Russian чавыча), is a species of anadromous fish in the salmon family. It is a Pacific Ocean salmon and is variously known as the king salmon, tyee salmon, Columbia River salmon, black salmon, chub salmon, hook bill salmon, winter salmon, Spring Salmon and blackmouth.