>How do you know you have luelingi and not cacatuoides? >- Steve They grew up! If you mean how to distinguish them when they are small, to my inexperienced eye it's not very easy. I had to wait until the male luelingi got the one black caudal fin spot and that light blue vertical stripe pattern in the caudal, dorsal and anal fins. Females - I have no idea. - -Doug Brown debrown@kodak.com