Please excuse the ugly picture.  I did an amateur job of cropping out the person in the picture.  This was recently caught in Maine.  What is it?

 

Thanks

 

 

looks like a longear sunfish to me 

Looks like a redbreast sunfish. My home lake is loaded with them, they love hanging out in  the shade of overhanging tree branches and waiting for bugs. Fun to catch with dry flies. Longears are generally more circul in shape and more colorful.

rainbow perch ?

Probably a hybrid of some sort. We have a fish around here called an orange spotted sunfish that looks very similar to your fish but without the green markings near the mouth. They do naturally hybridize with other pan fish to create some pretty interesting  fish.

pumpkin seed

*edit* but after reading pondbassin101's quote below i'd say he is right, redbreast

 

Edited August 1, 20178 yr by redmexican5081
wrong identification on my part

Dinner!

 

It's a sunfish in my mind it doesn't matter what kind of sunfish because they all taste the same....yummy! 

we can bicker, its a redear, a green belly, or a bluegill, or a shellcracker, or better we could just call it a sunfish. Likely its a hybrid of some sort anyway. 

need a better photo, my guess is redbreast. I'm positive it's not a longear, no white trace around the black spot on operculum flap, Maine is also about 800 miles from it's native range, unless you are fishing in some guy's private stocked pond, very minute chance it's a longear. More likely to find an orangespotted sunfish in Maine but again, no white trace on spot. The thing that is tricking me about your fish is the marks on cheek like a greenie, pumpkinseed, or longear. May be a hybrid like was mentioned 

 

imo, Pumpkinseeds are the prettiest sunfish in the north, longears are the pretty fish of the South, Im also partial to fliers with their little teardrop

according to this-http://extremephillyfishing.blogspot.com/2013/06/be-sunfish-expert-simple-guide-for.html

 

I'd say that's a redbreast sunfish 

Redbreast