Jerry,
I have used dwarf cories and pigmy cories in my grow out
tanks with the fry once I remove the parents with
no problems. I would think that once the fry were free swimming the
little cories will leave them alone. However if you do put the cories in the tank with free swimming fry
before you remove the parents, the parents may kill the cories (it has happened to me).
On a side note. I had a grow out tank with three
dwarf cories in it and then one day they were gone. I completely tore down
the tank a month later and never found the bodies, nor did I find the bodies on
ground near the tank. I only had some two month old A. borellii fry in the tank
with them, and I seriously doubt the baby borellii killed all three cories and then ate
them, including the bones!
Eric