The Raritan River is infested with redbreasted sunfish. Just look for slack water, especially with weed beds, and it's pretty much impossible to not catch a few.
Sometimes you need to get past all those pesky smallmouths, walleye, trout, and shad, but that's just the price you have to pay for great sunfish action. (I tease

)

__________________
Now the sun is just starting to climb up over the treetops,
And it's gonna be a beautiful day, that's plain to see.
But I won't be around at all, so don't even bother to call,
Cause on a day like today there's one place I gotta be:
GONE FISHIN'
Fishing with LardAlmighty on YouTube