What is a "Chromer"?
I think I agree w/ you, it's a Fallfish. Shiners would look differently and at 6" I say it would be much taller. It lacks the dark stripe of a Chub. Chubs and Fallfish are similar in every way except Max size.
I tried a few spots last weekend I didn't even feel were worth mentioning but since it's been a week and I'm not pissed off anymore, we tried a new spot in the Schuylkill River last Friday and for 3 hours all I got was a little 22" Channel Cat and a couple Chubs and Sucker bit in half we were using as bait. Tried a new lake in a new area the next day and aside from the crowd of a HUNDRED+ people at a place we went to enjoy nature, we got nothing but more baitfish bit in half, and the one Bass I did manage to hook took me deep into Lily pads and I had to snap off.
Today we fished the confluence of the lower end of 2 Trout/Smallmouth creeks and is often home to Muskellunge and Pike but all I got was a little 6" Smallie that jumped and spit my hook. My mom caught 2 Yellow Bullheads around 8-10" and my friend got a 16" Channel cat and a Bluegill. Again, aside fromm us 3, there 5 other people fishing from the bank and 2 in a boat. I was amazed that many people were there, but weekends always suck for serious anglers if u can't find a spot away from everyone else. The guys on the boat were doing well, and landed a 12"+ Smallie as they drifted by us and one of the guys fishing next to us got a 12" Largemouth. Not enough fish for 10 people, IMO.