I am new to aquaponics and this site. A hurdle I've run into has been where to buy fish to stock my system. It appears this is a common problem so here's my contribution to the site/group. If you want to post the Canadian availability of fingerlings in this thread, I will try to keep the first couple posts updated for easy reference so you don't have to search through pages.
For the record, I just started aquaponics as a hobby and have no affiliation with any shops. Im not sure how the site feels about putting pricing up or links to sites, so I will hold off on that until an admin comments. [Update - No concern raised. Added links and approximate prices]