Matt, Uwe Römer studied this & wrote a paper on it several years ago. His findings were that males tended to live longer than females. The average life span was around 2 years, but some survived to be over 5 years. I personally prefer to purchase juveniles and let them mature in my tanks. Mike Wise MATT & LINDA CROCKER wrote: > How old do apisto's get? I just bought my > first, A cacatuoides. The lfs had some juvies > and some that are a little older. Should I > start with the youngest or the older ones. Mine > are 2" male and 1 1/2" for the female. I'm > going to pick up a couple more females to fill > out the tank. Matt ------------------------------------------------------------------------- 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.