hello Alfredo I am breeding both species at this time. If you want to send me pic i'll tell you what you have. Female N. Anomala have checker board pattern with very thick lateral line down the body. Female Nanacara will have a grey brown color to them. Turning black when in spawning mood Female Cacatuoides will be yellowish in color. Have a distinctive black bar under their chin. Lower lip should show this black bar. Also female cacatuoides will show one lateral line down the body and sometimes three little lines just above the anal fin. Hope this helps 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.