hello Tsuh Yang Chen I have been fortunate to have spawned and raised fry from both Panduro ( sp. Pandurini) and Nijsseni. As both females look similar in a breeding dress coloration, Panduro females are yellow with black cheek marking and have large black blotch along the belly area as opposed to a large black dot in the mid body for the Nijsseni. This is how I've been able to distinguish the two different species as females are concerned. John Wubbolt ------------------------------------------------------------------------- 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"!