The rules around traceability pertain to food safety and not necessarily the method or location of the catch. The traceability requirements in the safe food for Canadians regulations were quite clear that each exchange of product, of food, along the supply chain must keep documentation records as to who received the food and where the food came from.
While we don't prescribe how that's done, we know from experience at the CFIA and in our verification of industry's compliance with traceability that these records are very closely tied along the supply chain, up until retail.