The cycle illustrates how a salmon develops from an egg into an adult creature.
Overall, the salmon goes through several stages, beginning in fresh water, moving to the sea, and finally returning to fresh water to reproduce.
The life cycle starts when eggs are spawned in fresh water. After around 3 months, eggs hatch and alevins appear. At this stage, alevins feed themselves from yolk sacs. After several weeks, they develop and begin to swim. At this point, they are known as fry.After a few months, fry grow and become parr, which has dark marks on their bodies.
Following one to three years it becomes smolt, grouping with smolts and migrating to sea. After migration, it spends one to eight years of his life in ocean. When they become fully mature, they return to fresh water to spawn. After lying eggs. adult salmon survive for only a short period and it is around two weeks.
