UPDATED at 1 p.m.
Cooke Aquaculture is in the process of removing dead salmon from their Liverpool Bay site.
Joel Richardson, VP of Public Relations with Cooke, says a severe drop in temperature is likely the cause.
"We remove fish according to provincial regulation and the fish are sent to an approved rendering facility so that work is being done now."
He says it's not uncommon for that to happen during difficult winters.
In an update to our newsroom, Richardson says they believe they lost 2 - 3 per cent of their stock, roughly 10,000 fish.
Richardson says they are providing the Department of Fisheries and Aquaculture and the federal Department of Fisheries and Oceans with updates.
He says as a courtesy, they have also informed the Region of Queens Municipality.
The deaths come as Cooke has officially applied for a major expansion in the bay.
Story by Brittany Wentzell