Hello Doug I have had good luck spawning my Bitaeniata. Never Kept Iniridae, so i cant give you help there. What i can tell you is that my Bitaeniata had to be really mature before they spawned for me. I never had young pairs spawn for me. Every pair of bitaeniata that ever spawned for me were at least a year old or older before i got good eggs. Unlike Cacatuoides which have spawned for me in half that time. Seems that this species likes maturity. Some one else out here might have had better experiences with their fish, but this has been the norm for me. I did spawn my fish in fairly soft acidic water. I have a pH of less then 6.0 and hardness of less then 20ppm. This just happens to be my tap water. So no I dont treat it to make it softer. 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. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!