I've raised fry from A. "rotpunkt", steindachneri, and macmasteri, and also a little spawn of nijsseni, and by far the nijsseni were the fastest growing. The nijsseni were in the largest, most heavily planted tank as well, so maybe they had better luck foraging. So far, I have always left the fry with the parents, but I have lost several borelli spawns because of this. I guess I like watching the parent(s) take care of the little ones. Lisa