[vintermann]

I know you are! But if better land management practices is good enough on land, why can't better fisheries management be good enough at sea?

[myshpa]

There are many issues, wikipedia seems ok, no time to summarize it, sorry.

[https://en.wikipedia.org/wiki/Fish_farming#Issues]

[vintermann]

I didn't ask about what was wrong with fish farming.

I said: you don't want to cut out ALL agriculture, even though a big part of present agriculture may be unsustainable.

So why do you want to cut out ALL fishing and fish farming? I know the answer is that you're a vegan, but that doesn't cut it if you want to convince those who care about sustainability.