Why does a fish become a success when its name changes? [Trivia about Yellowtail]

出世魚 ブリの豆知識 - Ocean Leather
Trivia about Yellowtail, the Fish that Grows Big as Its Success
Hello everyone!

Following on from last time's look at sea bream, this time I would like to introduce some fun facts about yellowtail, a fish that becomes a success when its name changes!

Image of a fish that grows with age
A "success fish" is a fish whose name changes as it grows. These include familiar fish such as yellowtail, sea bass, and mullet.

One theory as to why the names change is that fish have different commercial value and cooking methods depending on their habitat, ecology, and size, and so their names are read differently to identify them in the fishing and distribution industries.

But why is changing one's name considered a sign of success? It has to do with the customs of the samurai up until the Edo period!

At that time, samurai had a "childhood name" as children and a "pseudonym" as adults, and when they were given a status, they would sometimes change their name to something appropriate to that status.

For example, Toyotomi Hideyoshi, who succeeded Oda Nobunaga and unified the country...
"Hiyoshimaru" → "Kinoshita Tokichiro" → "Hideyoshi Hashiba" → "Hideyoshi Toyotomi" → "Toyotomi Taiko"
Not only did he use a pseudonym from his childhood, but he also changed his name each time he was promoted.

Because of this custom, fish whose names change as they grow are called "success fish," and they are loved as lucky charms and are used as gifts for celebrations.

Next, we will introduce you to yellowtail, a fish that represents success as it grows!


Yellowtail is a fish of the genus Yellowtail and family Carangidae in the order Perciformes. It is a seasonal migratory fish that travels north along the Japanese archipelago in spring and south in autumn. In the Kanto region, it changes from "Wakashi" to "Inada" to "Warasa" to "Buri", while in the Kansai region, it changes from "Tsubasa" to "Hamachi" to "Mejiro" to "Buri".
Yellowtail is a relatively fast-growing fish that grows to about 30cm in length in a year, and is often farmed. It is a popular fish that is enjoyed by Japanese people throughout the year. It is one of the main fish species in fishing ponds, along with red sea bream.

All fish have a sensory organ called the "lateral line" that detects the flow of water, and it is a valuable part that can only be taken from one piece of leather. The lateral line of yellowtail leather in particular is easy to see, and it is one of the leathers that allows you to feel the charm of fish leather the most. Usually there is only one running lateral line, but sometimes fish have a forked lateral line.

Bri Leather Collection

Ocean Leather offers a variety of products made with Bri Leather. They are perfect as gifts for special occasions and celebrations!

That's all about the fun facts about yellowtail, the fish that grows as it ages!
*There are various theories.

Ocean Leather