Hello Bob I have both the triple red form and the double red form. When I originally asked what the difference was, I was told that females have as much color in the dorsal, anal and caudal fins as some basic red Cacatuoides. My triple red females have color in all the fins. Not as much as the males do but color, my double red females don't have this color and I can sex them at 1/2 inch by the black coloring in the pelvic fins. My female triple reds have the same black fins as my double reds do just more color in the other fins. I don't have any males that have dark black front portions of the pelvic fins. This is the method I use to sex my fish. Hope this helps you out. John ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!