The diagram shows the lifecyle of salmon fish

The flow chart represents the development of a fish species called

salmon

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during its life

cycle

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.

Overall

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, it is obvious that there are three distinct stages illustrated in the process commencing with laying

eggs

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in the upper

river

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and culminating with the development of an adult

salmon

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. The first stage is when

eggs

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are laid on the gravel hiding among reeds and small stones in the slow-moving upper

river

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. After four months, these

eggs

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hatch and small fries whose length is between 3-4 cm emerge. At

this

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point in the

cycle

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, these fries will live in the lower fast-flowing

river

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for the next four years. Over time the small become bigger reaching 12 to 15 cm and at

this

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stage, they are called smolt. At

this

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period, they migrate from the lower

river

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to the open sea. After five years, these smolts will grow to become adult

salmon

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which measure between 70 to 76 cm.The final stage of

this

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cycle

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is when the adult

salmon

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start to swim back to their birthplace to lay their

eggs

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. Having completed all these steps, the life

cycle

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will

then

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begin again.