There are important tuna, sardine, swordfish and European anchovy fisheries. The sea around Vis is rich with fish, especially blue fish (sardine, mackerel and anchovy). Codfish roe and sardine roe are sold in olive oil. The Cantabrian Sea provides a rich variety of species, including tuna, hake and sardine. These upwellings support lucrative fisheries, including that of the southern bluefin tuna and sardine. The city is noted for its sardine and mackerel production. These puffs are readily available in Singapore, which include sardine, black-pepper chicken and tuna fillings. Most fish in the upper ocean such as sardine and herring are camouflaged by silvering. The Atlantic mackerel ("caballa"), sardine ("sardine"), and Jack mackerels ("chicharros") are also consumed frequently. A sardine cannery opened the same year. "Ishiru" in the Noto Peninsula is made from sardine and squid. In Kitakyushu City, it is called "jinda" and used for stewing fish, such as sardine. The fishing port is a major sardine port. Gelibolu is well known for sardine canning. The area is known as the place where sardine canning was invented.