I am not so sure about the freezing part.
A few years ago I got into catching crawdads and had so many I started to freeze them.

I removed the heads, put the tails in 1/2 gallon milk cartons, filled with water and froze.

A couple weeks later I thawed out a package and boiled them.....the results were MUSH!

I have since been told that the only way to keep them firm is to cook them before freezing.

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"Just Say No To Sovereign Nations!"