The diagram illustrate the stages of development of a specie of fish called salmon.
Overall, it can be seen that a salmon grows in three stages, beginning with almond eggs and ending with adult salmon. Also, the development is completed after five years.
To begin, the adult salmon lays eggs under stones of reeds in the upper river which is slow flowing. However, they stay there for approximately 5_6 months before leaving the upper river as fry which is usually 3-8 cm in length. Going forward, the fry move directly to the lover river which is always fast flowing. They remain there for approximately 4years from which they develop into the smolt. These measures 12-15cm in length and that marks the end of the second stage.
Finally, the smolt move to the open sea where they stay for approximately 5years. This is the habitat of the adult salmon which is 70-76 cm long. After the specified years they move to the upper river to lay their eggs and the cycle continues.
The diagram
illustrate
the stages of development of a specie of fish called salmon.
Overall
, it can be
seen
that a salmon grows in three stages, beginning with almond eggs and ending with adult salmon.
Also
, the development
is completed
after five years.
To
begin
, the adult salmon lays eggs under stones of reeds in the upper
river
which is slow flowing.
However
, they stay there for approximately 5_6 months
before
leaving the upper
river
as fry which is
usually
3-8 cm in length. Going forward, the fry
move
directly
to the lover
river
which is always
fast
flowing. They remain there for approximately 4years from which they develop into the
smolt
. These measures 12
-15cm
in length and that marks the
end
of the second stage.
Finally
, the
smolt
move
to the open sea where they stay for approximately 5years. This is the habitat of the adult salmon which is 70-76 cm long. After the specified years they
move
to the upper
river
to lay their eggs and the cycle continues.