Thanks for the response Mike. As far as the black markings on these fish, the lateral band is present in both and extends from the upper lip (preorbital) to the caudal peduncle. No caudal spot is present. The characteristic diagonal stripe from the pectoral insertion to the anus has only been seen on the fish with a colorless tail and not very often. Yes these two forms were collected in the same location. The red tailed form was the less common. Tom ------------------------------------------------------------------------- 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.