> ("pu", I love that monogram. :-)
You'd better be careful as I live up to my monogram. :-)
> - Do most/any of the Rainbow crosses produce fertile offspring?
We don't really know for sure. The general _opinion_ is that they will.
That's an old arguement that you will find somewhere in the archives. :-)
Something are better left untouched. :-)
> - If two organisms do not produce fertile offspring, then is that
> overwhelming evidence that they are different species?
Typically. A good counter example is the killi gardneri (I forget the genus),
several of them will not interbreed, yet they are all still considered the
same species. Part of that is also due to the fact that noone is working on
them.
Tootles
Peter J Unmack peter.unmack at asu.edu
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DESERT FISHES RULE: To boldly thrive where no other fish can make it!
Australian desert fishes pages at http://ozdesertfish.base.org (don't
forget to visit the Desert Fishes Council pages too)
Native Fish Australia pages at http://www.nativefish.asn.au
North American Native Fishes Association at http://www.nanfa.org
Aquatic Conservation Network at http://www.acn.ca