Harriman Lake on this site lists bluegill but does not list Green Sunfish.
I just caught one today (Just a little guy) making it hard to specifically identify. But to me it looks more like a Green Sunfish.
The Colorado Parks and Wildlife also list Red Ear Sunfish in Harriman lake as well. But this site does not!
Anyway, Can one of you help us all distinguish specific details that differentiate the three?