A small, young, saltwater fish with soft edible bones, found in the Mediterranean. There are other small, young saltwater fish found that are called sardines but they are not true sardines, such as the Pacific and Atlantic herring, blueback herring and sprat. The sardine is a silver color and has a rich flavored flesh that is dark colored. Fresh sardines should be put on ice immediately and eaten as soon as possible, but in the United States they are hard to find fresh. They are generally found canned in olive oil, soy oil or water. Sardines are popular as an appetizer and are good broiled or grilled.