|SALMON RAISED IN SCHOOLS|
Dr. May shows kids how to care for
Salmon eggs are placed in special freshwater aquariums.
The water temperature is kept around 10 degrees C using a chiller. In 40 days, the eggs 'eye up'; you can see backbone and eyes developing within the egg.
By 70 days, they transform into alvins or sometimes
called 'yolk sac fry'.
The yolk sac, or belly, provides all the nourishment for the fry.
When the yolk sac disappears (called buttoning
up), around 120 days, you must
start to feed them and clean the tank on a regular basis.
are ready to be released into a stream when
they are about 4-5 months old and typically 2 inches long. This shows Dogfish Creek,
the main tributary to Liberty Bay.
are released into a stream designated by
the Department of Fish & Wildlife. Please ask them before letting any 'hatched' salmon
into nearby streams.
For more information on Salmon in the Classroom, visit their website at: