Sardines...

Sardines:

Sardines or pilchards are a group of several types of small oily fish related to herrings, family Clupeidae. Sardines were named after the island of Sardinia, where they were once in abundance. [1]

The terms are not precise, and the usual meanings vary by region; for instance, to many people a "sardine" is a young European pilchard. The FAO/WHO Codex standard for canned sardines cites 21 species that may be classed as sardines;[2] FishBase, a comprehensive database of information about fish, lists at least six species called just "pilchard," over a dozen called just "sardine," and many more with the two basic names qualified by various adjectives.

Canned "sardines" in supermarkets may actually be sprats or round herrings. The actual sizes of the fish canned varies by species. Good quality sardines should have the head and gills removed before packing.[2] They may be also eviscerated before packing (typically the larger varieties), or not; if not eviscerated they should be free of undigested or partially digested food or feces[2] (accomplished by holding the live fish in a tank for long enough that their digestive systems empty themselves). They may be packed in oil or some sort of sauce.

NOT TO BE CONFUSED with Anchovies:

The anchovies are a family (Engraulidae) of small but common schooling saltwater plankton-feeding fish. They are found in scattered areas throughout the world's oceans, but are concentrated in temperate waters, and are rare or absent in very cold or very warm seas.

The anchovy is a small green fish with blue reflections due to a silver longitudinal stripe that runs from the base of the caudal fin. It is maximum nine inches (22.86 cm) in length and body shape is variable with more slender fish in northern populations. The snout is blunt with small, sharp teeth in both jaws. The mouth is larger than those of herrings and silversides, two fish which they closely resemble. It eats plankton and fish larvae.

Anchovies are abundant in the Mediterranean, and are regularly caught on the coasts of Sicily, Italy, France and Spain. The range of the species also extends along the Atlantic coast of Europe to the south of Norway.