The diagrams display the life cycle of the salmon, which is a large fish species.

The diagrams display the life cycle of the salmon, which is a large fish species. Overall, salmon have an average lifespan of 9 years and their life cycle consists of four main stages: egg, fry, smolt, and adult. While the first three stages occur in freshwater, the last one takes place in saline water. Firstly, salmon eggs are laid among small stones covered by reeds in the upper part of a river, where the current is slow. After the eggs hatch, the baby salmon hide among the stones for approximately 5 to 6 months to mature into fry that measure 3 to 8 centimeters long. They then swim to the lower, faster-flowing part of the river. After growing and feeding here for about 4 years, they reach 12 to 15 centimeters and are considered smolts. They then head to the oceans where they grow into adult salmon which average 70 to 76 centimeters long. They spend around 5 years here, after which they migrate upstream to their birthplace to spawn, and the entire journey is repeated all over again.