Cape Fear River totally changed after they stocked those fish in the 60’s. Channel catfish, blue catfish, and flathead catfish were all introduced (think they only stocked 10-20 flatheads). They had white catfish, bullheads, redbreast sunfish, and have all but disappeared with installation of dams and introduction of the three catfish species.
I actually moved a few (30) of those flatheads around in a little project on Fort Bragg where I introduced some Cape Fear flatheads to a catfish pond on Fort Bragg. I was hoping they would go after the over abundant crappie, bluegill, and warmouth. Wasn’t there long enough to see the results. Looks like the pond I stocked them in has been drained for dam repairs now.