Tuna Auction is really popular among tourists.
But the government decided to close it from 10th of December to 23rd of January.
The reasons are

1: The visitation space is narrow.
2: People don't follow the rules.
3: The dealer will be the most busiest in a year.

Tuna Auction was suspended last year for the fist time.
And so is this season.
If you are coming to Japan during these dates, please make sure this attention.