While there are many traditional fishing methods of high historical value dating from before the Early Modern era, the majority of them disappeared from use during Japan's Post-War economic miracle. As the fishermen in the dwindling years of traditional fishing were in their 20s, they are now in their 80s, meaning there are probably only five to six years left of them being available for interview surveys. Unless efforts are made to undertake such surveys, we will forever lose valuable traditional fishing knowledge. Here, using the "Taishibari" fishing method as an example, I will address the urgent need and purpose of conducting interview surveys on traditional fishing methods.