Bigger doesn't mean better for hatchery-released salmon

A recent study examines hatchery practices in regards to how Chinook salmon hatcheries in the PNW are affecting wild populations over the past decades. Over 65 years, Chinook salmon hatcheries in the PNW have skewed towards releasing larger fish that are more easily preyed upon.

from Oceanography News -- ScienceDaily https://ift.tt/2QipQkE
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