The commercial fishing industry in British Columbia is currently facing a downward trend in production. This paper investigates the factors that are causing this movement, specifically looking at the effects of aquaculture on the industry. This up and coming branch of fish production has seen great economic gains while the commercial fishing sector has been steadily declining. The hypothesis is that aquaculture is having immense adverse effects on the industry and while production in this sector continues to grow, it is causing the commercial sector to flounder. A model is used to identify the factors affecting commercial fishing productivity and to examine if aquaculture is the leading contributor to the recent trend. Data was collected for 28 years examining statistics that may be affecting the industry. Results from the regression models were limited and a clear understanding of the causes could not be reached.