Japanese cuisine is renowned worldwide for its meticulous attention to detail, fresh ingredients, and respect for seasonality. Among the many culinary delights Japan offers, seafood holds a special place. The concept of eating seasonal fishes in Japan, known as 'Shun' (旬), is deeply ingrained in the culture, ensuring that diners experience each ingredient at its peak flavor and nutritional value. This guide explores the best times to savor various seasonal fishes in Japan, providing insights into why seasonality matters and the unique characteristics of each featured fish.