The diagrams below show the life cycle of a species of large fish called the salmon . summerise the information by selecting and reporting the main features, and make comparisons where relevent.

The given diagrams

illustrates

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the life cycle of

salmon

from eggs to mature individuals. From an

overall

perspective, there are three main steps in the development of

salmon

starting with eggs in an upper river and ending with fully-grown adults. In the first stage,

salmon

begin their lives in the slow-moving upper river as eggs, which lie on a riverbed under the protection of small stones and surrounding reeds for about five to six months. Afterwards, they hatch into newborn fish that are three to six centimetres long, and they are called 'fry'. In the next step, the fry follows the fast flow to a lower river, where they stay up to approximately four years until they reach a length of between twelve and fifteen centimetres, and they are known as 'smolt'. In the final stage, the 'smolt' relocates into an open sea and settles down in

this

new home for about five years. During

this

time, they develop into adult

salmon

, which are seventy to seventy-six centimetres in length. Once they reach that size, they swim upstream rivers back to their birthplace.

Subsequently

, male

salmon

mate with female ones to create the next generation, and their life cycle starts again.