The pictures illustrate how a type of fish called salmon develops over the course of its life time.
Overall, on average, the lifespan of salmon reaches up to about ten years, and can be broken into three noteworthy stages.
Firstly, salmon eggs are laid among the patches of reeds in a slow-moving upper river beneath small stones. In roughly half a year, a salmon egg hatches, and a fry – a 3-8 cm in length tiny salmon – comes into existence, which swims to a fast-flowing lower river.
Having reached the lower river, a salmon takes around four years to grow into a smolt, which is between 12 and 15 cm long. Subsequently, the smolt migrates to the open sea, where it lives for approximately half a decade, reaching its final form of growth – adult salmon (70-76 cm).
Finally, the mature salmon swims back to its original birthplace, the slow-moving upper river, to reproduce and place more eggs, repeating the whole cycle.