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What is salmon ranching? Salmon farming vs salmon ranching Hype vs Fact Environment Salmon nutrition Economic benefits Who is funding the hype? Salmon Ranching vs Farming. What is the difference between 'ranched' and 'farmed' salmon?
What are the risks of ranching or farming salmon? There are three main risks shared by both methods of salmon culture: Salmon consume fish meal which can place additional strain on those fish lower in the food chain. Farming and ranching produce organic waste fish poop and processing waste which need to be properly managed.
Fish may suffer from lesions, fin damage and other debilitating injuries. The overcrowded and stressful conditions promote disease and parasite outbreaks—such as sea lice—that farmers treat with pesticides and antibiotics. The use of antibiotics can create drug-resistant strains of diseases that can harm wildlife populations and even humans that eat the farmed fish.
Escaped fish introduce yet another threat into the environment. Each year, hundreds of thousands of fish escape farms and threaten the genetic diversity and survival of native species. High stocking densities result in a significant amount of pollution from fish excrement and uneaten food, which in turn lead to poor water quality high in ammonia and low in oxygen.
Outdoor fish farms can also attract predatory marine animals, such as sea birds and sea lions, who are sometimes poisoned or shot by aquafarmers for eating the fish. Despite evidence to the contrary, it is still a common misconception that fish do not feel pain. Slaughter methods in the aquaculture industry are appalling.
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