Much of the bluefin used in Asia these days is farm raised. The boat price of bluefin was down to $3/lb for a grade B fish this year... in past years it would be $15 or more with grade A's fetching as much as $30......
More at issue is the way the drag boats operate - obliterating everything in their path thus destroying the food chain. As long as we do that the Cod stocks will NOT replenish themselves. Much easier to blame over fishing (when the amount of guys still fishing commercially has decreased dramatically in the last ten years) than the root cause of HOW things are fished and our polluting.