Fish farms are some of the worst pollutants in the ocean. Remote stretches of Patagonia are becoming cess pools of salmon shit as a result of salmon farming.
Don't get me wrong, there are sustainable ways to farm fish and other seafood, but most are a complete ecological disaster. Even something as seemingly harmless as mussel farming has detrimental impacts on the local ocean ecology, as surprise, surprise mussels produce waste and accumulating it in one place is not a good thing.
Yup. To elaborate more fully, I buy wild-caught fish because of how unsustainably many fish farms are run right now. I buy particular varieties of fish based on what species are most sustainably fished. I buy fish to support the fish industry ("vote with your wallet") in hopes that people will see the demand and continue to pursue & improve fish farming in the future.
Don't get me wrong, there are sustainable ways to farm fish and other seafood, but most are a complete ecological disaster. Even something as seemingly harmless as mussel farming has detrimental impacts on the local ocean ecology, as surprise, surprise mussels produce waste and accumulating it in one place is not a good thing.