It is about 25-30 cm long when caught, but it can grow up to 40 cm long and is about 180 grams when caught in the autumn. Saury will be at most four years old. Saury is a pelagic fish and wants to stay close to the surface and is caught there, but it can also be down to a depth of up to 230 m. When saury is escaping from predators, it floats on the surface and is similar to other fish within the genus.