Even with out any typos it's still a very impressive haul of big perch. I assume that they are the same/similar year class, and there must be a good supply of small to medium sized prey fish, unless the dreaded crays have invaded.
It is and I've been thinking about what the perch feed on. During the times I've been to Wingham I fished mainly for tench with corn and I've only ever caught tench with it, no fluked roach which I would've thought is a possibility. I'm sure Budgie used to say that during certain months the roach would suddenly appear but after a short period they'd vanish until the following year. Would this be enough to sustain perch? I doubt it. The times I've looked in the margins I don't remember seeing an abundance of fry either.
Maybe Steve can shed some light on this?