So, our colonists of the oceanic planet Mayim (yes, that's its name), of whom every single one is a Jew, have encountered a problem: there is no more room on the buoyant-colony-thing that they live in, and they can't get back to Earth (the warp-gate broke).

Then the scientists have a great idea: their children shall become fish!

Seriously, gene modification so that everyone becomes parent to a blue fish mermaid/man, fins and everything. Mandatory for all. Is this morally wrong?

Important note: this is important for the to-be-born colonists' survival.

Another note: This isn't gene-splicing so much as going into the coding directly and messing around.

  • 1
    Related: judaism.stackexchange.com/q/27107/1713
    – Daniel
    Sep 18, 2015 at 17:38
  • Considering we are gene splicing genetics from non kasher species into kasher species and calling it kasher to eat i'm not sure that there'd be an issue. But i don't think the big rabbis have finished weighing in on this particular issue yet
    – Aaron
    Sep 18, 2015 at 17:39
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    Welcome to Mi Yodeya, and thanks for this thought-provoking question! We have a couple of somewhat-related questions about tinkering with the human reproduction on three-parent children and IVF in general. I suggest that you edit your profile and give yourself a name!
    – Isaac Moses
    Sep 18, 2015 at 17:44
  • how much do we really understand genetics? it is a bottomless wisdom in my opinion
    – ray
    Sep 19, 2015 at 19:59
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    "Important note: this is important for the to-be-born colonists' survival." Generally except for the 3 cardinal sins, any prohibition is permitted in the face of risk to life. Assuming the situation is considered "risky" even if there were some prohibition, it would be permitted.
    – mevaqesh
    Sep 20, 2015 at 0:42


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