Press Release

February 10, 2012

Incorporated Administrative Agency, Fisheries Research Agency
Nisseiken Co., Ltd.

Good news for the culture of sevenband grouper
? Viral vaccine to resolve a longstanding problem ?

Large grouper species are sold at high prices in Kyushu, particularly the sevenband grouper (Epinephelus septemfasciatus), which grows relatively fast and is expected to become a new aquaculture resource in many prefectures in Western Japan. Studies on the aquaculture of this fish started in the 1980s. Aquaculture technologies have rapidly advanced in the last decade, and a system was established for mass production of the juvenile. However, mass culture has proven to be difficult because many of the juveniles were lost due to a viral disease (viral nervous necrosis: VNN) when they are transferred from nursery tanks to net pens.

Firmly believing that a viral vaccine is essential for the aquaculture of sevenband grouper, the Fisheries Research Agency, Hiroshima University, Mie Prefectural Fisheries Research Institute, Ehime Research Institute of Agriculture, Forestry and Fisheries and Nisseiken Co., Ltd. jointly developed the vaccine and obtained the official approval for production and sales.

The vaccine may be available before the end of this year, and its distribution is expected to stabilize aquaculture and increase the production of the sevenband grouper.


*The vaccine was developed under the MAFF competitive project “Development of VNN vaccine for stable aquaculture production of sevenband grouper” aimed at promoting novel policies on agriculture, forestry and fisheries.


sevenband grouper (Epinephelus septemfasciatus)