TETSURO provides unique tours for both former/current fish market.
TSUKIJI = former
TOYOSU = current

(1) Intermediate dealers floor walk in Toyosu
This is the professional dealing site which basically refuses sightseers.
TETSURO has a special permission to take you when he procures fresh seafood.
Meeting time : 8:30 Meeting point: Toyosu Senkyakubanrai
Duration: 50 min.
Short tour (25 min.) can be provided as the addition to (2).

(2) Tuna auction observation in Toyosu
This provides you a spectacular view for a thousand tuna which wait auctions.
There are high/low two decks.

The above picture is to tell the location of high/low decks.
You can not walk on the floor like persons in the picture.
(High deck)
Big capacity. Available for everyone. No application is needed.
(Low deck)
Capacity limited. Available for only lottery winners.
Application period for the manth is a week in the previous month.
Starting date of the application period defers month by month.
TETSURO provides full services of tuna auction view.
- Application for the observation from low deck
- Pickup service to your hotel (in central Tokyo) using a private car
- Guiding talk at high deck
- Guiding talk at low deck ( in case TETSURO is a winner as well)
(Don't worry even though TETSURO doesn't go low deck with you. On the low deck, an English guide working for the site answers to your question.)
Meeting time : 4:30 Meeting point: Your hotel
Duration: 1 hour (5:15-6:15)
(3) Tour for Related stores for restaurant operation in Toyosu
A big parcentage of visitors to the intermediate dealers floor are restaurant operators.
Since they demand not only fresh seafood but also dry food, pickles, wasabi, other vegitables, egg omlet, kitchen knives and other utensils, some of related stores which carry those things are running to satisfy buyers' demand.
Duration: 15 min.
Provided as a free addition to (1)or(2)

(4) Food tour in Tsukiji outer market
Tsukiji is the district where the wholesale market used to exist.
Although the main function moved to Toyosu in 2018, the outer market is still active as the place related stores for restaurant needs are runnning. Or the place is further popular under effort made by persons running business there. Now the place is well sightseeing oriented and crowded by travelers.

https://www.airbnb.com/experiences/1478484 (Shared)
https://gowithguide.com/japan/tour/tokyo-sushi-making-experience-w-toyosu-shopping-walk-3784