Tons of Bluegill

So I found a pond nearby during Summer and fished it a lot with friends and family. All we caught were infinite amounts of bluegill, crappie, and pumpkinseed. I also met a fishermen who showed me some gigantic beasts he caught in the same lake. He has caught everything from huge bass, catfish, and something I have never seen before; monster carp. Anyways here is a picture of an average panfish we caught: