Considering Sturgeon are classified as a species at risk, they should not be targeted.
Killing, harming, etc., listed wildlife species
32. (1) No person shall kill, harm, harass, capture or take an individual of a wildlife species that is listed as an extirpated species, an endangered species or a threatened species.
http://www.sararegistry.gc.ca/approach/act/Part9a_e.cfm