That's the warning to tourists visiting Tokyo's fish market, the world largest.
It seems some tipsy tourists want to get up close and personal with the prized tuna.
One British tourist was chased out of the market after licking a frozen tuna.
Others have tried to hug the fish.
Tourists were banned from the market during the peak New Year buying season.
But the restrictions were lifted last week.
Now, the tourists are being asked to behave themselves.
The big fish are big business.
One tuna can easily sell for $11,000.
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