[ExI] Fish in space

spike spike66 at att.net
Sat Mar 18 15:22:46 UTC 2017

>... On Behalf Of BillK
Subject: Re: [ExI] Fish in space

On 18 March 2017 at 13:31, Dan TheBookMan  wrote:
> http://www.smithsonianmag.com/smart-news/fish-dont-do-so-well-space-18
> 0961817/
> I'm more curious about what would happen to vertebrates and other 
> macrobes under lunar or Martian gravity, simulated or actual.

I can give you a fun bit of data: fish can survive 100g for ten minutes.

There is no documentation because it was illegal.  When I was a younger man,
I was helping set up an experiment on a centrifuge (48 in radius industrial
centrifuge, the kind few can access) at China Lake Naval Research.  I went
to the pet store, bought a dozen neon tetras (because they are cheap) put
the hapless characiformes in a thermos bottle, spun them to 100g for ten
minutes.  After they came out, all survived but were swimming in a spiral
manner like a well-hurled football.  Later they seemed to have recovered.

I have long wanted to repeat that experiment under more favorable
circumstances, but now I have no access to a centrifuge of that size.  I
don't know how many gs a tetra can endure.  Do you?


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