Tsuh Yang Chen wrote: > hmmm, if i remember my biology lessons correctly, it is much more > complicated than that. two distinct species can produce viable fertile > offspring. the issue of what constitutes a species is much more complex > than that. > > for example, haven't hybridizers crossed different mollie species and > platy and swordtails to create all those hybrids that are perfectly > fertile? True, but given the opportunity, a fish (or any organism) will breed only with its own species. If it can't find a mate of its own species, then that's another story. This calls to mind the old saying, "Ah, Wyoming, where the men are men and the sheep are scared!". Mike Wise > ------------------------------------------------------------------------- > This is the apistogramma mailing list, apisto@majordomo.pobox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@majordomo.pobox.com. > Search http://altavista.digital.com for "Apistogramma Mailing List Archives"! ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!