In terms of what happened in 2017, you can see a peak in the graph of our estimate of the average number of fish there. There were close to a million. Why the fish decided to “prospect”, as we call it, into further areas in the north in that particular year is unknown. It's exactly what happened, though. It would seem that they collectively decided to go out and prospect to see if there were other places to live. They were observed as far north as Lake Melville in Labrador. We know that many of them were captured by commercial trawls around the Great Northern Peninsula of Newfoundland. Subsequently, from many, many reports, many of those fish....
As usually happens with wildlife species, these probably weren't the adult fish. These were juveniles. They were teenagers. We see this all the time with wildlife species. They do stupid things like stay in the north. So we think they stayed in the rivers they went to and that most of them died because of the cold conditions during the winter.