"Fatty tuna from Oma, (Shimokita Peninsula, Aomori Prefecture) is said to be the best tasting in Japan, recognized as a product of the highest quality. Large fish are reportedly priced in the tens of millions of yen. The tuna fishing season goes into high gear from September to December in an average year"
Source: In search of the Ultimate seafood
Travel Notes 2
Nipponica, No 8, 2012, page 23