Don't worry about that - I'm not slim and all manner of beans compensate for what you get in meat. One reason I started eating fish again was the healthy properties, plus I like it, which might sound selfish really. I have other reservations about fishing, the seas are becoming very empty, because the terrible deep trawler fishing is destroying so much!! Our seas are becoming deserts, and over here they have to go further and further out to catch anything!
One sickening thing is that under EU restrictions and quotas certain fish can't be landed. So what happens - they throw them back dead!! It makes no difference , they're still caught and killed! Killed for no reason!
Future generations are going to really hate us!