This is not a wild fishery or a catch-and-release fishery.

These can have commercial impacts on wild fisheries, making cod-like fishes more expensive to market.

While immigration and emigration can be present in wild fisheries, they are usually not measured.

Large predator fish with higher trophic levels have been depleted in wild fisheries.

Increased demands on wild fisheries by commercial fishing has caused widespread overfishing.

Aquaculture is encouraged by many governments as a way to generate jobs and income, particularly when wild fisheries have been run down.

After a lull in growth during the 1990s, due to pathogens, production took off again and by 2007 exceeded the capture from wild fisheries.

The journal reported an estimate that if fishing continued at the current rate, there would be a global collapse of wild fisheries by 2048.

In several respects, though, aquaculture as commonly practiced today is making the problem of declining wild fisheries worse rather than better.

"With the government clamping down on the wild fishery because of stock depletion, competition like that is the last thing a fisherman needs."