As for your contention that 'if it won't hurt a person, it won't hurt a
fish' - I think that one is a little too broad. The dosage different would
need to be 1000 times smaller due to the differences in mass (imagine eating
1000 teaspoons of table salt ;~). Fish also have some sensitivities we
don't have (ie: copper) and don't have, some we have (ie: iron?).

Err, I think all anmalks are equally affected by heavy metal ions.

I don't think either fish or people can handle cyanide well ;~).

The cyanide ion is deadly to all red blooded animals. Blocks hemoglobin
or soemthing. it's cyanate that's in salt. I think. don't quote me.


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