No real reason to ask other than curiosity...
I know what an over populated crappie pond looks like. Tons of 7in crappie that are cardboard thin. What would an over populated walleye pond look like (in the off chance that a stocking class had some successful spawns and they overpopulated)?
Best way to tell is look at the relative weight charts for them. There are RW charts for all the the species of fish in the Archives. The smaller WE to me always look too skinny.
For instance a 15" WAE should weigh 1.1# and a 15" YP should weigh 1.6#. I'm used to looking at YP and not WAE.