Female Cacatuoides, as with most other female apistos will have a noticeable amount of black in their pelvic fins, and their caudal fins are rounded rather than lyreate. The only female Apistos I've seen with a lyreate tail are my female Apistogramma sp. "Lyretail Panduro", and even with them it is less pronounced than in a mature male. As far as when they color up, I think I've had some males begin to color up as early as three months, and they are usually coloring up by 4-5 months. Their color continues to develop for several months. Zack ------------------------------------------------------------------------- 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.