I never eat farmed fish because I don't trust fish farms and it seems that there are not enough regulations to make farmed fish healthy.
I don't buy industrial beef neither and only eat high quality beef that is certified to have had a good diet and no hormones or antibiotics.
I don't eat cheap Brazilian chickens neither.
That means that I eat quite less fish and meat than other people, but every time I eat, I enjoy a good product. Also, that makes me not responsible of all the externalities generated by the meat and fish industry.