The diagram provides an in-depth overview of the life cycle of salmon, a prominent species of large fish.
Overall, the life cycle of salmon comprises four primary stages: eggs, fry, smolt, and adult, forming a continuous cycle.
Initially, salmon eggs are deposited in the slow-moving upper river, nestled among reeds and small stones, where they remain for approximately 5-6 months. Subsequently, the eggs hatch into fry, which measure 3-8 cm in length.
In the next stage, the fry migrate to the fast-flowing lower river, where they dwell for approximately four years. Subsequently, the fry undergo a transformation into smolt, reaching a size of 12-15 cm.
In the final stage, the smolt embark on a journey to the open sea. They remain there for approximately five years, eventually maturing into adult salmon, measuring nearly 70-76 cm in length. These adult salmon return to the river to spawn, thereby perpetuating the cycle.
