Until fall of 2017, the YP in my pond did not come to the surface for supplemental feed. Neither did the BG nor GSF. I had been hand feeding AM 600 and Skretting for a few years.
I switched over to floating Optimal BG fall of 2017. The trout made the change immediately. Soon, both GSF and YP were coming up. Of course, I quit feeding when the water got cold.
This spring everyone bellied up to the feed trough. Trout are really splashy feeders. GSF ease up, study the pellet, then rise to it and dart away. YP come up from a couple of feet below the pellet and hit it with a splash and a turn back down.
A few small LMB and BCP fed with everyone else, too. The big grass carp hoovered in what they could.
I'd try Optimal BG. Maybe hydrate it for a few weeks for the perch. They will figure it out in time.
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