Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Yellow perch eggs.

I have seen small 2cm egg sacs in female YP toward end of August from Lake Erie. Amount of egg development prior to spawning will be based on location of geographical latitude that also determines spawn date. Sampling of female perch in each water body will determine when egg sacs first develop. End of July or early August is probably a close start date of egg development for the most northern yellow perch populations.