Kathy Olson wrote: > > Females have black ventral fins...as Bob pointed out. This feature is > actually quite prominent at a young age....I have had 1/4 inch fry I could > sex. > > Kathy > I honestly have to say that it's been a very long time since I bred A. borellii so my answer is more general. Most apistos I have bred, I have been able to sex at quite a young age/small size so the Atlanta-breeders/wholesalers shouldn't be any different. The black in the pelvic fins is usually a good marking, others can be black in the dorsal, black markings on the belly and cheeks, basically yellow body colour. Regards Fredrik L. ------------------------------------------------------------------------- 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"!