Nigorobuna Day

What Is Nigorobuna Day?

February 5th through 7th is "Nigorobuna no Hi" (Nigorobuna Day) in Japan, established by Takashima City in Shiga Prefecture, known as a production area for nigorobuna. The days aim to spread awareness of nigorobuna, a fish unique to Lake Biwa, and the traditional local dishes made with it.

Regional Pride Behind the "2567" Wordplay

The date uses a pun reflecting deep local affection for this regional specialty.

• The date's origin: the numbers "2567" are read as "nigorobuna," which is why the three days from February 5th to 7th were set aside for this anniversary
• What nigorobuna is: a type of carp found only in Lake Biwa and the rivers that flow into it, an essential ingredient in the traditional cuisine of Shiga Prefecture
• Its signature dish: "funazushi," in which nigorobuna is fermented with salt and rice, is a traditional dish sometimes described as the oldest form of sushi in Japan

Nigorobuna and the Environment of Lake Biwa

Because nigorobuna is found only in Lake Biwa, its population is directly affected by changes in the lake's environment. In recent years, declining numbers have become a concern, and efforts toward conservation and resource management are underway in Shiga Prefecture, including in Takashima City.

Tips for Marking This Day

• Try funazushi and other traditional Shiga dishes made with nigorobuna
• Learn about the species unique to Lake Biwa and its rich ecosystem
• Visit Takashima City and other areas known for producing nigorobuna
• Learn about conservation and resource management efforts for nigorobuna

A Rich Food Culture, Nurtured by a Single Fish From Lake Biwa

Nigorobuna is a symbol of Shiga's food culture, nurtured by the abundant natural environment of Lake Biwa. Let February 5th through 7th be a chance to connect with this region's deep-rooted food traditions through this one special fish.