Lox is a fillet of brined salmon, which may be smoked. Lox is frequently served on a bagel with cream cheese, and often garnished with tomato, onion, cucumber, and capers.
Lox on bagel
A "lox and a schmear" refers to a bagel and cream cheese with lox. This dish is a part of American Jewish cuisine.
A lox platter for one
Smoked fish is fish that has been cured by smoking. Foods have been smoked by humans throughout history. Originally this was done as a preservative. In more recent times fish is readily preserved by refrigeration and freezing and the smoking of fish is generally done for the unique taste and flavour imparted by the smoking process.
Racks of haddock in a homemade smoker. Smouldering at the bottom are hardwood wood chips. The sacking at the back is used to cover the racks while they are smoked.
Medieval smokehouse, ca. 1465, at the archaeological site of Walraversijde, a fishing village on the coast of Belgium
A smoked Atlantic mackerel
Smoked fish in smoker