Which part of the Delta were you fishing. Let me guess, somewhere on the Mokelumne? Do a google search on Redeye bass, and make sure you click image. The scale pattern below the lateral line is total redeye. I once caught a bunch of redeyes in the Delta, and it took me 3 fish to figure out what was going on. All the size you mentioned. The first one I caught I just brushed it off as a funky looking spotted bass.