The diagram below shows the life cycle of the salmon.
Summarise the information by selecting and reporting the main features and make comparisons where relevant
The diagram given illustrates various stages in the life of a salmon. It is clear from the diagram that there are seven stages in the life cycle of a salmon, beginning with hatching from eggs and ending with becoming a spawning adult. We can also see that the cycle remains permanent.
At the first stage of the life cycle, in fresh water, eggs hatch in about a 3-month period, and the alevins appear. The alevins swallow yolk sacs for months, then swim at 5 to 10 weeks old. At this stage, the immature fish is called a Fry.
After a period of time, the Fry develops "finger" markings, and it is now called the Parr. At the next stage, the 1- to 3-year-old salmon, which is named Smolt, will group and leave for the sea. They spend approximately 8 years at sea, and during this period they are mature fish. Finally, the mature salmon spawns and dies within 2 weeks, and the life cycle repeats.
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