FREEING THE ELWA How Hatcheries Work FREEING THE ELWA Fertilizing sperm and eggs FREEING THE ELWA Raising Fry FREEING THE ELWA The Larger Life Stages FREEING THE ELWA Outplanting to the Wild ID: 668755
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Fish Hatcheries
Savior or Scourge for Salmon?
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How Hatcheries Work
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Fertilizing sperm and eggs
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Raising Fry
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The Larger Life Stages
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Out-planting to the Wild
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Why Don’t Hatchery Fish Survive Very Well?
Non-competitive behavior
Non-native stocks
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Feeding Time
Non-native Eastern Brook Trout are often released into Washington riversSlide8
Danger of Hatcheries
Non-native stocks
Swamping and Competition
Disease Transmission
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The Arguments
Some argue that hatcheries have saved salmon from going extinct.
Some argue the over-use of hatcheries have caused wild salmon stocks to decline faster.
Some argue hatcheries have uses that should be on a case-by-case basis, such as in saving critically endangered runs.
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This project was made possible in part by a grant from
Washington’s National Park Fund.
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