Were there any Mulberry Trees in that area? I believe at the end of May\June is when Mulberry Trees start producing their berries and carp will hang out under the trees eating the berries that drop into the water. Fly fisherman match the hatch with flies that look like Mulberries.
I have heard that they do eat those berries. In the immediate area of where I hooked into it, there weren't any trees really since I was a hundred or so feet from the shoreline. Thanks for watching.
Carp are omnivores, so they will eat anything. The carp in that body of water are very healthy. Also check out this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-aEUTMVsAp1k.htmlsi=biJcziPLE5glphuf