life cycle of the salmon
The diagrams below show the life cycle of a species of large fish called the salmon.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant .
The diagrams illustrate the life cycle of a species of large fish namely the salmon.
It is clear that the life of the salmons take place in lower course river, open sea and upper course river. And their maximum size is around 70-76 cm.
In the fast flowing lower river, baby salmons are called "fry" which have 3-8 cm long. They live there for approximately four years then become "smolt" that are 7-9 cm longer than "fry". Since then, "smolts" migrate to open sea for around 5 years.
Once salmons become "adult salmons", at their maximum size of 70-76 cm, they swim to upper river with slow moving current. In the river, It is full of reeds and small stones. To breed their next generation, "adult salmons" lay down their eggs beneath the small stones, the period is long for about 5-6 months. Finally, new "fry" is born and begins its life again in lower river. The cycle is closed and continuous.
Salmon.jpg