Fishing stocks are crashing everywhere, simply because no one owns the resource. Crashing populations simply means a higher market price, that will essentially mean that fishing will continue until the cost of catching tuna (or whatever fish) exceeds the market price. Meanwhile, the Japanese are getting a great deal that doesn't include anyone's cost for maintaining the resource - viz., the world is subsidizing sushi consumption.
Countries need to get their acts together and start rolling out ITQs (individual transferable quotas), like they use in NZ and AK (for halibut). Otherwise we will just see resources wasted in a free for all to catch fish. This is up for debate in Congress now for US fisheeries generally.
Thou speakest wisely, o my friend.
Here's the Tragedy of the Commons for all to see, where no one and everyone owns the resource. Eventually it's used, abused and used up. Our socialist federal forests (the commons) are one example of the resource being destroyed by our government's Marxist policy.
I'm not familiar with ITQ. Will check it out.