I might suggest buying your salmon license right off, that will give you everything you need .. if you purchase a non salmon license and decide you wanna try your hand at salmon fishing you will have to buy the whole license again ..this has happened to a buddy of mine just makes sense to spend the 40 bucks up frontNot that I have ever heard of. Now if you are intending to fish for salmon then you need a salmon fishing license. If you are planning to stay away from the salmon fishing areas then you can get just a non-salmon fishing license. It's cheaper.
Check out this link for the details.