I assume that you got the 5"-6" YP from Fender. Shelby did not sell any fish yesterday. If some of the YP appeared plump or sort of fat then those were the females. Normally male YP will be mature at 1 year whereas only a small percentage of the female YP will develop eggs at 1yr. So you could easily have a limited spawn in April. The earlier developing 1yr old females will tend to spawn a little later than older perch. If your new pond is muddy as in prior pictures during the spawn period eggs may not hatch well and plankton as fry food will be very reduced. YP fry need to eat well to survive. Minnow traps in Aug-Sep will collect 2"-3" YP to verify the success of a 2022 YP spawn.

5 lbs of FHM in a new 1/2 ac is more than enough to produce plenty of small FHM assuming the pond water begins to clear during the long spawn season of FHM. Normally you will begin to see FHM fry in early June. If you see lots tens of thousands of FHM in Sept I doubt you will need to add more FHM in fall 2022. Depending on the size of the spring 2023 numbers of FHM you might want to add 1-3 lbs of breeder FHM.