As a general rule, canned salmon that is labeled as "wild salmon" or "Alaskan salmon" is more likely to be wild-caught. However, it is important to read the label carefully to ensure that the salmon is actually wild-caught. Some brands may use the term "wild salmon" even if the salmon is actually farm-raised.
If you are looking for canned salmon that is specifically wild-caught, you can look for the following certifications:
* Marine Stewardship Council (MSC)
* Aquaculture Stewardship Council (ASC)
* Global Aquaculture Alliance (GAA)
These certifications ensure that the salmon has been caught or raised in a sustainable manner.