The price of mackerel in South Korea is increasing significantly, while cutlassfish is becoming cheaper. The price difference between the two fish has narrowed to less than two times the price of mackerel, down from four times in previous years. This is due to increased demand for mackerel and decreased demand for cutlassfish due to the economic downturn. Other factors such as high oil prices, high exchange rates, and decreased imports of salmon from Norway are also contributing to the rise in mackerel prices. Additionally, the prices of other premium fruits like Shine Muscat are also falling due to decreased demand and thicker consumer wallets.