<p>The mottled skate <i>Beringraja pulchra</i> is an important fishery resource in Hokkaido, Japan. However, information regarding its life history in this region remains lacking. To address this knowledge gap, we examined the age and growth of the mottled skate. Annual band formation and age were estimated based on sagittal sections of the vertebrae. Measurements of marginal increments in the vertebrae indicated that the boundary between the translucent and subsequent opaque band could be defined as the reference point for counting annual rings. Three growth models, including the von Bertalanffy, Gompertz, and logistic growth models, were fitted to the age–length data. The logistic model was selected as the best-fitting model for the length-at-age data, which indicated that females grew significantly larger than males. According to the growth equation, the individuals from northern Hokkaido exhibited a lower growth rate than those from Korea. We also investigated the seasonal occurrence of females with egg capsules, which were observed over an extended period from December to June.</p>