There a couple of relatives in there. Sustainable -how sustainable? If the only bar is sustaining the annual harvest for the medium term, that's not the highes

There a couple of relatives in there. Sustainable -how sustainable? If the only bar is sustaining the annual harvest for the medium term, that's not the highest bar. Commercial fishing can have it mpacts within those bounds that we might still find unacceptable. .Especially so if you consider how little knowledge we really have about ocean ecologies. I for one think the goal should be recovery. If you look at old records of major fisheries, I think it's clear that they're depleted now relative to the past. Atlantic cod is well documented. You can see footage of old Australian tuna fishing operations. Clearly, current populations are far smaller. East Atlantic Mackerel fisheries. Herring. The entire mediteranean sea. Salmon... The other relative is relative value. Even if fisheries can support 1950s (pick a year) harvests, the size/value of that harvest as a percentage of our economy is a lot smaller. This is a long term trend. Relative importance of commercial fish harvests declines over time. What I am suggesting is that there is a point where it's not worth it.