Ishidai Nemuri Fishing Hook Size 28, 5 bags Although "Ishidai" (striped beakfish) is written on the package, these are Ishidai Nemuri fishing hooks. Tankichi Fishing Hooks has over 240 years of tradition since its establishment in 1781 (Tenmei 1), specializing in the forging, hand-hammering, and handcrafting of fishing hooks, much like the process of making Japanese swords.