Artificial incubation and releasing.

The techniques of artificial incubation and releasing of salmon is what enables us to see salmon returning to the rivers of Japan today.

The process of incubation and release.

*Capturing the salmon.
September to December. In order to receive the eggs, salmon are carefully captured alive.

*Taking out the eggs/ insemination.
Ripe eggs are taken out of females and inseminated with sperms from the males. The inseminated eggs are then quietly placed in water.

*Accommodation.
The extremely fragile eggs are brought to be incubated in containers with water (8 degrees Celsius in the case of Hokkaido spring water) .

*Environment control for the fry.
Once the eggs are hatched, the fry are placed in the controlled environment (light, oxygen, water temperature) of a quiet fish farm.

*Releasing.
When they reach the size of about 4-5cm, weighing about 1g, and conditions of the river and ocean are right, it is time to release the fry.


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