There are two sides to that. The first answer is yes. Last year, there was an escape from a trout farm on the south shore of Nova Scotia. There is some humour in it that there was some wonderful trout fishing going on in Shelburne Harbour for a number of months. However, with the 2015 aquaculture regulatory framework in Nova Scotia, automatic timely reporting is in place for any escapes from finfish farms. There is an obligation for remediation and cleanup and there are fines that the province can impose if there is an escape. In that particular instance last year, the fine was assessed.
On November 23rd, 2017. See this statement in context.