Shusseuo

The term shusseuo refers to fish in Japan whose names change depending on their growth stage. This tradition dates back to historical customs of the samurai and scholars who changed their names during coming-of-age ceremonies and promotions. The term shusseuo literally means “promoted fish” and refers to the symbolic “promotion” of the fish as they grow and develop.

Examples of such fish include the buri (yellowtail), which is called hamachi in its juvenile stage and buri in its adult stage, as well as the suzuki (sea bass), which is known as seigo as a young fish and suzuki as an adult fish. These name changes are based on size, age, and regional differences.

The use of shusseuo in cuisine has cultural significance, as these fish are often served at festive occasions and ceremonies and are considered harbingers of good fortune. For instance, buri is traditionally served at New Year celebrations to symbolize prosperity and success.