While king salmon typically weigh between 20 and 50 lbs (9-23 kg), the largest ever caught was 126 lbs (57 kg). Besides being the largest Pacific salmon, the king salmon is identified by the small spots along their back and tail.
Like other salmon, the king salmon is anadromous; they will return to the freshwater stream in which they were born after a number of years living in the ocean. Some male king salmon return after a single year in the ocean as small “jack salmon”. Other fish may take up to 7 years and return to their natal stream as giants. Upon reaching their stream, the king salmon spawn and die shortly after.