There are plenty of pike in the Neshannock. I used to live beside the creek in the dam area, and would catch 3 to 5 pike a day there. White rooster tails or live chubs. Most between 18 and 25 inches. Went scuba diving in one big hole downstream from whats called the junction, and saw 5 or 6 nice ones in that hole.  I'm sure they feast on the trout that are stocked.