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 given diagram illustrates the life cycle of salmon which is a species of lager-shaped fish.

Overall

, in the entire cyclical process, salmons undergo 3 main periods with different forms including fly, smolt and adult. The cycle initiates with flies hatching out of the salmon eggs between the stones where reeds are growing on them in the upper rive after a growth period of approximately 5 to 6 months.

Subsequently

, these newborn fish swim

along with

slow stream down to the lower fast-moving river, where they

then

spend about 4 years to get bigger extending about 12 to 15 cm, known as the smolt. In the next phase, smolts run through the river and appear in the open sea which offers them a habitat for

further

growth. After around 5 years, these smolts ultimately become adults in the ocean and

then

migrate back to the upper stream in order to lay new salmon eggs.