check with Don York @ Eden, or Killer ......... they might have an idea of what's going on. Myself ... I've only seen LM Bass that looked that way, at WB. And that was many years ago, and just occasionally.
When I was there in late Oct, the Shad were still pretty small ... and they were hanging around the shallow brush & close to the fronts of docks. They seemed to be pretty plentiful, so I don't think it's for lack of food ... unless they had a mass die-off, or something.
I don't know if Don has been fishing any, lately ... but, Killer goes regularly, so he should be able to put you on some fish. ....... luck2ya ...cp