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The image displays the life cycle of salmon with illustrations and text for each stage. It begins with "1) egg," which occurs in the upper river spawning grounds, eggs buried in small nests, and takes 2-3 months. The next stage is "2) alevin," tiny salmon with egg sacs, which develops in the same location and takes 1-2 months. Then "3) fry" are depicted, small salmon with yolk sacs absorbed, 5cm in size, in the lower river growing grounds, taking 2-4 years. The stage of "4) smolt," salmon transitioning to salt water, is 15cm in length and is found in the open sea for 1-8 years. Finally, "5) adult salmon," which are 70-85cm in size, return to the upper river spawning grounds after 1-5 years in the open sea.
Given the complexity of the image, the above description may not be entirely accurate.
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The illustration demonstrates how a salmon develops over the course of its lifetime.
Overall, the salmon passes through three different stages of life, taking between nine to ten years to reach its final adult form.
In the beginning, the salmon starts its life cycle as one salmon egg among others. These eggs are deposited beneath the small stones within a patch of reeds in a slow-moving upper river. Once an egg hatches about half a year after being laid, it produces a fry, roughly three to eight centimeters long.
The next step is for the fry to swim to the faster flowing lower river. After remaining in this river for about four years, the fry turns into a 12-15 cm long smolt and heads for the open sea.
The smolt spends around five years in the open sea. Sebsequent to passing of half a decade, the fish enters its final form as adult salmon, measuring 70 to 76cm, before returning to the upper river to lay its eggs in the reeds and restart the cycle
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