The illustrations give information about the cyclical process of the salmon, from birth to becoming an adult and then breeding to continue the cycle. This three-step life cycle indicates that the young salmon, after hatching from eggs, change their living locations to better feed. After a couple of years, mature salmon, which reach their highest length, breed together and lay their eggs at a safe place.
The salmon life cycle begins with salmon eggs, which are located just near the small stones under the reeds where the slow flow of the upper river protects the eggs from being eaten or stolen by other predators. After hatching, which takes around 5 to 6 months, baby salmon, which are called fry, relocate to the lower river and settle down for about 4 years to use the benefit of fast-moving water to feed themselves properly.
At the second stage, smolt, the semi-adult salmon, which have grown quickly in length by approximately 8 centimeters to 12 to 15 centimeters, leave the river and move to the open sea. After around 5 years, smolt fish become mature and the largest in size; this is when they breed together and leave their eggs in the upper river, and the cycle repeats itself.