princess49872001 asked:


I want to do cryogenics for my science fair project, and I found this on the internet.

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5 Responses to “Is it possible to freeze minnows and them thaw them out so that they return to their previous state of life?”

1. mathwhiz on August 7th, 2008 1:01 pm

   I don’t think so.

2. FunInTheSun on August 10th, 2008 2:28 pm

   if u could u would have 2 be able 2 flash freeze and to keep them at a low steedy temp

3. sarahjanel on August 13th, 2008 8:06 am

   It is possible but if I where going to do it I would use gold fish. I have heard they come back easier. You would have to gradually freeze them and then let them thaw naturally. We did do this when I was in high school and it worked.

4. VPT on August 14th, 2008 7:04 am

   You can do this with goldfish by putting them in liquid Nitrogen or liquid Oxygen but you have to be quick and I would not suggest you to do to too many of them because afterwards, they slowly die of gangrene.

5. Candice Z on August 15th, 2008 5:31 pm

   No animal can naturally survive low temperatures temperatures associated with freezing, with the possible exception of nemotodes (very tiny worms). Arctic fish can survive very low temperatures by having anti-freeze proteins, but in this case freezing is prevented. If the fish gets cold enough and actually freezes it will be killed. A minnow would not have these proteins, so it would not survive the experiment. You could demonstrate the fact that they die in a cooling experiment, but people may be unhappy with the idea that you are killing fish.

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