The diagrams below show the life cycle of a species of large fish called the salmon.

The diagram illustrates the life cycle of

salmon

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, a species of large fish, showing the different stages of its growth and the locations where each stage occurs.

Overall

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, the process consists of three main stages, starting with the eggs in the upper

river

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and ending with the adult

salmon

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in the open sea.

Initially

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,

salmon

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eggs are laid among reeds and small stones in the upper

river

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, where the water flows slowly.

This

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stage lasts approximately 5 to 6 months. Once hatched, the young

salmon

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, known as fry, measure between 3 and 8cm in length. The fry

then

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moves to the lower

river

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, where the water flows faster, and they remain there for around 4 years as they continue to grow. During

this

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time, they develop into smolt, which are larger, measuring about 12 to 15cm. After spending several years in the

river

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, the smolt migrate to the open sea, where they mature into adult

salmon

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. At

this

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stage, they grow significantly, reaching a length of 70 to 76cm. The adult

salmon

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stay in the sea for about 5 years before returning to the upper

river

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to lay eggs and begin the cycle again.