to better illustrate how different looking the one you caught is, here for comparison are what i'd call some "typical" NNJ bluegill
female

male
yours much different: blunter shape, much larger gill flap, the dorsal fin goes all the way back to the base of the tail fin, pec fins extend past the vent, pelvic fins extend past the anal fin
very cool looking fish you caught there
(don't get any ideas lurkers, these ones already had their pics sent in to DFW haha)