If people want to eat farmed fish is their own choice but
The lower omega 3 ratio comes from using plant oil to replace some of the fish oil. So you raise a salmon on a fish and plant oil diet instead off strict fish oil diet. This is good beacuse that leeds to less use off industrial fish meal and oil.
Even farmed fish is still very high in omega 3 and much better than chicken or cow meat that has none omega 3
The use off antibiotics comes from the 80´s where that where indeed a very high use of antibiotics due to problems with furunkulosis. But the introduction of vaccinations have erraded this problem and the fish industri now is that meat industri thats use the less amount off medicine compared to example chickens or pigfarming.
Net pens in the ocean do emmit nutrients that leed to eathrophication. But one can avoid this by buing fishes from land based fish farming.
The lower omega 3 ratio comes from using plant oil to replace some of the fish oil. So you raise a salmon on a fish and plant oil diet instead off strict fish oil diet. This is good beacuse that leeds to less use off industrial fish meal and oil.
Even farmed fish is still very high in omega 3 and much better than chicken or cow meat that has none omega 3
The use off antibiotics comes from the 80´s where that where indeed a very high use of antibiotics due to problems with furunkulosis. But the introduction of vaccinations have erraded this problem and the fish industri now is that meat industri thats use the less amount off medicine compared to example chickens or pigfarming.
Net pens in the ocean do emmit nutrients that leed to eathrophication. But one can avoid this by buing fishes from land based fish farming.