is a type of long, thin kitchen knife used in Japanese cuisine to prepare sashimi (sliced raw fish or other seafood). Similar to the nakiri bà Âchà Â, the style differs slightly between Tokyo and Osaka.
Types of sashimi bà Âchà  include:
Following the traditional practice of Japanese kitchen knives, the Sashimi bà Âchà  are sharpened with only a single-bevelled edge to the blade, a style known as . The highest quality kataba blades have a slight depression â urasuki â on the flat side, which gives better cuts and allows for the cutting of thinner slices than the used for santoku, nakiri, and gyà «tà  knives, but requires more skill to use. The sharpened side is usually the right side for a right-hand use of the knife, but knives sharpened on the left side are available for left-hand use.
The length of the knife is suitable to fillet medium-sized fish and generally is between and long. Specialized commercial knives exist for processing larger fish, such as the top quality large blue-fin tuna with knives including the maguro bà Âchà  and oroshi hà Âchà  at almost long or the slightly shorter hancho hà Âchà Â.