Comment by alecthomas

Sadly that is how fishing works. Wild Salmon is endangered in many locations including the US [1] and UK [2], for example.

It does also occur that popluations become so low that they can't recover. Atlantic Northwest Cod are the most obvious example, still not having recovered from overfishing in the latter half of last century [3].

[1] https://time.com/6199237/is-farmed-salmon-healthy-sustainabl... [2] https://wildfish.org/latest-news/main-uk-populations-of-atla... [3] https://en.wikipedia.org/wiki/Collapse_of_the_Atlantic_north...