Concerns raised by salmon group over discoveries of farmed fish in East Coast rivers

A large Atlantic salmon is shown in Nova Scotia's St. Mary's River in this undated handout photo. (THE CANADIAN PRESS/HO - ATLANTIC SALMON FEDERATION, Nick Hawkins & Tom Cheney) A large Atlantic salmon is shown in Nova Scotia's St. Mary's River in this undated handout photo. (THE CANADIAN PRESS/HO - ATLANTIC SALMON FEDERATION, Nick Hawkins & Tom Cheney)