I've seen fish that had been in icebox of ice all day start to breathe and move fins again when in pan of water for scaling, but they normally didnt' truly revive.
My uncle told me of taking crabs out of freezer that had been there for weeks and a couple were moving around when he came back to clean them after allowing to thaw.
Don't know that any would have survived, probably damaged from freezing even if revived.
RogerNC
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