The middle wholesale market is the heart and soul of the Tsukiji Market and is where much of the buying and selling of goods occurs. Primary auctions for some fish happens early morning at around 5. Once the primary auction is complete, the fish are taken by the buyers, known as middle wholesalers, who cut, package and ship product to the end customers. The middle wholesale area is where the big fish, such as maguro tuna, are cut and packaged for shipment to clients. It's possible to see large bandsaws slicing frozen fish into cuts for sale. Although much of the product never goes on display in the market, many of the middle wholesalers are active sellers in the market and have an amazing array of seafood for sale.
Tsukiji is a fresh "wet market," so the floors can be slippery. It is also an active markets, so trucks, trolleys, buyers and sellers are moving around the market in great haste and it is important to be aware of surroundings to avoid an accident.
Tourists and individual buyers are welcome in the middle wholesale market from around 8:30am and the markets winds down at around 10am. Any earlier than 8:30am visitors risk getting in the way of the market professionals, who are known to have short tempers occasionally.
Part of the fun of the inner market is just walking around and finding out what's for sale. Japanese love seasonal food, and many of the fish available in the market are for sale for onlya a limited amount of time during the season each year.
Enjoy the market atmosphere, be careful and perhaps buy something to enjoy.
Note, the primary auctions are open for controlled tours at 5am. The tours are limited to 120 persons and last 45 minutes. Gathering point for the primary auction tour is the Kachidoki Gate of the market.