出刃包丁 Deba
The Deba is a traditional Japanese Wa-bocho (Japanese-style knife) used for butchering fish. Its heavy, thick blade is designed for filleting, cutting through fish bones, and removing heads.
日本の伝統的な和包丁の一種で、主に魚を三枚におろす、骨を断つ、頭を落とすといった硬い部位の下処理に使う専用の包丁です。