When I was a kid, my family visited the Pymatuning Reservoir, which straddles Ohio and Pennsylvania. All I remember is that we bought loaves of moldy bread and threw the slices into the water. There were a bazillion carp that were fighting for the bread right on the surface. It looked like you could walk on the lake without getting your feet wet.
Even now, when I encounter the word “carp,” I think of that disgusting sight.