Sardines (/sɑɹˈdinz/), or pilchards, are a group of several types of small, oily fish related to herrings, family Clupeidae. Sardines were named after the Mediterranean island of Sardinia, where they were once in abundance. The terms aren't precise, and the usual meanings vary by region; for instance, to many people a sardine's a young European pilchard. A generalisation's that if the fish's under 4″ long (10 cm) it's classed as a sardine, and if larger than 4″ it's… (More on Sardines)