My understanding is that the cod are not expected to recover to numbers previously seen at all, though. The smaller number present today seem likely to comprise a permanently smaller proportion of the new habitat that has formed in their absence.
I looked into this many years ago so perhaps that has changed. I hope so. Otherwise it means the Canadian Atlantic was irreparably altered by modern fishing in the blink of an eye, and the rest of the world is working hard at doing the same thing right now.
