A few drops are then poured into the water "to keep the salmon in good health".
The beat at Dunkeld will be declared officially open and anglers who have booked a slot will set off to try to catch their first salmon of the year.
Mike Metcalfe, general manager at Hilton Dunkeld, said: "Perthshire is one of the country's premier fishing locations and the River Tay is famous across the world, and we are absolutely delighted to have been involved in supporting this event."
