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Photo of dozens of sockeye salmon in holding pool.
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Salmon Hatchery
Spawning and Fertilizing: Photographic series

SALMON

Spawning and Fertilizing
Photographic Series

(Click photos to enlarge)

 

Salmon preparing to enter the Fish Pass
and enter the holding pond

Chinook Salmon in holding pool
Chinook Salmon
Sockeye Salmon in holding pool
Sockeye Salmon

 

Crowding and sorting
Adult salmon waiting in the Issaquah holding pond prior to spawning.
Adult salmon waiting in the Issaquah holding pond prior to spawning.
Issaquah Hatchery adult holding ponds. Crew operating fish crowder.
Issaquah Hatchery adult holding ponds. Crew operating fish crowder.
 Crowding adult salmon to sort them for condition to spawn.
Crowding adult salmon to sort them for condition to spawn.
 Preparing to sort adult salmon for spawning.
Preparing to sort adult salmon for spawning.
 Sorting fish for species, sex, and ripeness for spawning.
Sorting fish for species, sex, and ripeness for spawning.
 Male coho salmon in spawning colors.
Male coho salmon in spawning colors.
   
  Egg care and handling
 Checking which size egg-picking disc to use for picking out the bad eggs in this basket. Next step is the automatic egg picker.
Checking which size egg-picking disc to use for picking out the bad eggs in this basket. Next step is the automatic egg picker.
 Pouring eggs into hopper of the egg picking machine to select fertile eggs.
Pouring eggs into hopper of the egg picking machine to select fertile eggs.
 Cleaning the dead eggs from the live eggs, using a egg picking machine.
Cleaning the dead eggs from the live eggs, using a egg picking machine.
 Checking accuracy of the egg picker. White eggs are bad, orange eggs are good.
Checking accuracy of the egg picker. White eggs are bad, orange eggs are good.
 Mixing sperm into unfertilized salmon eggs.
Mixing sperm into unfertilized salmon eggs.
 Mixing the salmon eggs and sperm.
Mixing the salmon eggs and sperm.
Eggs and milt (sperm).
Eggs and milt (sperm).
Pouring salmon eggs into a pre-measured can to put the correct amount into the incubator trays.
Pouring salmon eggs into a pre-measured can to put the correct amount into the incubator trays.
 Pouring chinook Salmon eggs into incubator tray.
Pouring chinook Salmon eggs into incubator tray.
 Adding iodine to disinfect salmon eggs prior to incubation.
Adding iodine to disinfect salmon eggs prior to incubation.
Closing incubation lid on egg tray.
Closing incubation lid on egg tray.
 
   
Hatching Stages: From eggs to fry
Eggs in gravel
Eggs in gravel
Eyed Salmon Eggs
Eyed Salmon Eggs
Alevin, or sac fry Salmon
Alevin, or sac fry Salmon
Coho fry
Coho Fry



Related Links
American Rivers NMFS Restoration Center
Center for Watershed Protection NWIFC SSHIAP
Chehalis River Council People for Puget Sound
Friends of the Issaquah Salmon Hatchery (FISH) TFW Ambient Monitoring Program
USGS