Salmon Raised In Hatcheries Have Different DNA Than Wild Relatives

Nature World: Seventy percent of salmon sold at the market are farm-raised and believed to be higher in contaminants and unhealthy fats than those caught in their natural habitat. What's worse is diseases can spread easily from farmed fish to their wild relatives. Experts say this could have a devastating impact on wild salmon populations, which have already suffered significantly from human activities such as overfishing and damming. Attempts have been made to replenish salmon in Oregon and Washington using......

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