From
https://www.ontario.ca/page/lake-sturge ... y-strategy
"Exploitation (e.g., the legal harvest of fish) is not considered as a current threat to Lake Sturgeon recovery as recreational harvests and commercial harvests, for the most part, have been prohibited across Ontario."
And from
https://mffp.gouv.qc.ca/english/publica ... itions.asp
"It is prohibited to sell, buy, trade or offer to buy the following fish when they are caught during sportfishing in Québec or when they are caught elsewhere under a sportfishing licence: bass, allis shad, American eel, striped bass, white bass, brown bullhead, channel catfish, carp, copper redhorse, river redhorse, panfish, sturgeon, northern pike, chain pickerel, walleye, rainbow smelt, burbot, black crappie, muskellunge, yellow perch, char, landlocked salmon, Atlantic salmon, tench, lake trout, rainbow trout and brown trout. Furthermore, it is prohibited to sell baitfish caught while sportfishing or to sell, buy or trade or offer to buy an Atlantic salmon that comes from a natural environment."
Next time you go, politely ask to see his license.