Peter, These are color strains that have been selectively bred over many generations to bring out the desired colors. There are some very colorful wild specimens out there, too. These are the original stock used and improved upon (color wise). I've never heard of any "double red" or purple tail populations of A. cacatuoides in the wild. Think of them as color strains like in guppies. Mike Wise plasticolor@guate.net wrote: > There are obviously differences in opinion regarding these - I guess I > could call them "color strains" - of Apistos. Are these "double reds" or > "purple tails" strains selectively bred out of one distinct population of > Apistos, or does the development of these colorful fish come from crossing > animals from different populations of the same species ? > > Peter > plasticolor@guate.net > > ------------------------------------------------------------------------- > 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"!