The operation to airlift them off the ice involved 48 people, two helicopters and 11 ships, the emergencies ministry said.
The 675 fishing enthusiasts were carried out to sea when the floe, off the island of Sakhalin, broke free.
Fishing through bore-holes on ice-bound waters is a popular winter pastime in Russia.
None of the rescued anglers airlifted off the ice floe needed medical assistance, the ministry said in a statement.
The ice floe had drifted 500 m away from the coast before running aground again.
One of the rescued anglers, Vladimir Vasilenko, said he had ventured on to the ice floe knowing that windy conditions might pose a risk.
“The wind was blowing from the shore, and it was clear that something might happen, but people were still going out, so we did too,” he said.
“It was the excitement, of course. We also heard on the radio that it would be the last chance for fishing on the ice. And so we rushed out to go fishing.”
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