Deba
Deba is a type of hōchō used for dressing fish or meat. Its thick and sturdy structure also makes it suitable for working with seafood, including hard fish bones as well as lobster and crab shells.
It can be handy to have a deba for preparing larger fish like bream and a kodeba (little deba) for smaller fish such as horse mackerel.
If choosing just one deba, Akira recommends a blade length of around 210mm as the easiest to use.