Fish ID?

[Jerseydix]

looks like a Largemouth Bluegill.

[flyboy1]

That is a 100% no doubt completely absolutely positvely........ Green Sunfish its often confused as a warmouth.... but its a green sunfish....

[Reel Class]

I think the winner is green sunfish. Thanks guys!

[Tony Cav]

War Mouth

[Sigma1073]

Did some searching and I would have to say green sunfish.

Warmouth - http://cnre.vt.edu/efish/families/warmouth.html

Green Sunfish -http://cnre.vt.edu/efish/families/greensun.html

[Skunk City]

Green Sunfish. Caught a bunch last year at Pompton Lake. Aggressive little f*ckers too, would hit 5" senkos all day long. Here's a few pictures...

[acabtp]

it's a green sunfish, which is an invasive species in NJ. do not release them alive.
you should also contact NJDEP biologist for your region. page 40 of the regs:

The most effective way to succeed in containing aquatic invasive
species is to report each encounter. Anglers are reminded that possession
or release of flathead catfish, snakehead, Asian swamp eel, brook
stickleback, oriental weatherfish, green sunfish and warmouth, bighead
carp, silver carp and grass carp (diploid) is prohibited. Anglers must
destroy these species if encountered and submit specimen(s) to the
Bureau of Freshwater Fisheries at (908) 236-2118 for north Jersey and
at (856) 629-4950 for south Jersey.