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Steps in Breeding Fish

The fishes are ready for spawning.

The abdominal cavity is bulging filled

After being dazed, the fishes are cleaned with clear

water for preventig the spawn getting into contact

with the anesthetic

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The fish is dried because the spawn may not get into

contact with water.

Subsequently the spawn is wiped off into a bowl.

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All fish eggs(caviar) of the four

example fishes the pupils have seen

The milk of some milter (male fish during spawningseason) is added to the eggs of the female fishes.

Water is added to activate the reaction between eggs

and milk

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Different breeding pools (incubator with cold water (7-8C) which is rich of oxygen).

The white eggs/points have got a fungal disease and must be sorted out by hand

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Young fishes at an age of about 8 weeks. At the age

of 10 months, the fishes are 10 cm and are now put

into a larger breeding pond.

Adult brook trout and river trout

(at an age of about 2 years)