almost never lox. What you'll find on most bagel sandwiches is actually smoked salmon. Many people use the terms "smoked salmon" and "lox" interchangeably, but they're not actually the same.
Nowadays, the terms "lox" and "smoked salmon" get used interchangeably, so check that you are getting the real thing if you buy lox from anywhere beside an in-the-know deli. F&W's guide has tons ...
Lightly smoked and relatively lean wild Pacific ... It’s simply brine-cured salmon, a.k.a. lox, and its righteous, unabashed saltiness fairly cries out for a bagel and a schmear of cream cheese ...
Cold smoked salmon (also called Nova lox) is made by curing raw fish with salt (and often sugar) and partially dehydrating/smoking it using low, indirect heat (below 85 degrees Fahrenheit).
If your morning routine often starts with a bagel smeared with cream cheese and topped with thinly sliced red onions, briny capers, and delicious lox, then you may want to reach for something else.