I think you could, if you put them in after the fry are free-swimming and not sitting on the bottom most of the time. If it's not on the bottom, my cories don't bother it (and sometimes, if it's moving and on the bottom, they won't bother it anyway).
Well if they are big enough and moving around well I dont see much of a problem. But put the corys under heavey quratining before anything little fry are sensitive to anything. We wouldnt want your little babies getting sick and dieing.