This video of striped bass moving upstream and into fresh water was taken at head-of-tide on the NW Miramichi on May 21, 2022. This was a week after the smolt run started. This bass migration occurred for several hours. They could be caught on virtually every cast with a streamer fly, so were definitely feeding. DFO claims striped bass have no effect on the NW Miramichi salmon population. Draw your own conclusion.
Video by John Bagnall
Striped bass on the Northwest (YouTube)