What is farmed fish? Is one source more sustainable than the other? Does wild-caught fish mean that it’s healthier ?
We know the benefits of eating fish and now that we know that overfishing is an issue. You might wonder about sustainability and many people seem to be unsure of the differences between wild-caught and farm-raised fish.
Many people actually assume that wild-caught fish must be a lot better for you because it’s more “natural.”
Short Answer: It depends! There are a lot of factors to consider such as nutrition, sustainability, safety and cost. And the outcome will be different depending on the species of fish, as well as where and how the fish is caught.
Image Credit: (AP Photo/Alex Brandon)
Wild-caught: caught by fisherman in their natural environment.
Farm-raised: grown in pens that are often submerged in ponds, lakes and salt water
It can be a misconception that farmed-fish are more sustainable because they have been promoted by the fishing industry and governments as the solution to declining fish stocks in our ocean. However, fish-farming practices often causes a lot of pollution throughout the water and threaten existing creatures and habitats.
However, traditional fishing isn’t the solution either. Wild fish are harvested in a way that does a lot of collateral damage to the ecosystem and other fish. When fishing boats are sent out into the ocean, this isn’t very carbon-footprint friendly. Additionally, destructive fishing methods such as Super Trawlers are extremely harmful to our oceans. Sign our petition to ban them permanently in Australia.
Find out about sustainable seafood here.
Besides protein, fish are also the main source of omega-3 and low in saturated fats. The nutritional benefits between the two are not as great as you imagine.
For some species, such as the rainbow trout are almost identical in terms of calories, protein, and most nutrients.
- Omega 3: In terms of vitamin 3, farmed fish have significantly higher levels.
- Contaminants: From a widely cited study , they found that the levels of PCBs, a potentially carcinogenic chemical, to be ten times higher in farmed fish than in wild-caught fish. However later studies found that these levels are similar between the two.
- Mercury: Levels in mercury are higher in some species of wild-caught fish such as the Bluefin Tuna.
A great resource you can use to search seafood recommendations is Seafood watch that will help you determine which type of seafood that’s fished or farmed in ways that have less impact on the environment.
Additionally, If you love sushi, check out our easy sustainable sushi guide!
– A.K #Erro404fish