Herrings are a preeminent forage fish, often marketed as sardines or pilchards. One criterion suggests fish shorter in length than are sardines, and larger fish are pilchards. One criterion suggests fish shorter in length than are sardines, and larger ones pilchards. Sardines (or pilchards) are canned in many different ways. The United Kingdom's Sea Fish Industry Authority, for example, classifies sardines as young pilchards. The adults may be sold as pilchards; the juveniles, as sardines. Along the coast fishing and aquaculture are common, with fisheries for abalone, pilchards and sharks. Stargazy pie is a pastry-based fish pie which, by tradition, is filled with whole pilchards. By 1939 Britain was importing millions of canned pilchards from markets in California and Japan. Imports of pilchards from the UK, including those from Cornish curers were banned. In 1806 a total of 7000 hogsheads of pilchards were recorded taken from Mullion. Polperro pilchards were exported throughout Europe. The village also had a fishing fleet, mainly for pilchards. Polperro pilchards were exported to many parts of Europe. More commonly used are Spanish Sardines, Cigar Minnows, Pilchards, and Blue Runners.