Indeed they do, KiK !!
I heard reports of 2lb fish, years ago (on this forum). And I saw a picture of a Redear of around the same size, caught by the gentleman that used to run the store, at the top of the hill going down to the ramp next to the dam.
I believe that if the Shad had been totally eradicated, along with all the other species of Sunfish (except the Bluegill & Redear), fish of this size would be the norm ... and possibly the norm for the last 10yrs ... barring any other species of fish "planted" by any well meaning ignoramus.