I'm not CB1 but the current year's hatch of YP will range from 2" to almost 8" in October depending on the degree of crowding and the amount of food available to those fish. If there is a wide range of sizes present the largest ones will typically be females and smallest ones mostly males. In crowded hatchery conditions and not pellet trained the majority of the current year class of perch can be 2"-4". A majority of the perch from this year's hatch that receive adequate food will be 4"-6" by October. Those growing well will be plump. Most fish farms will sort the current year class into size categories and price them accordingly: 2"-4", 4"-6", 6"-8".
I couldn't have said it any better. Dr. Perca knows his stuff!
