It sure seems like you did get some good redear, along with some amount of bluegill. I agree with others to just fish as many as you can out, along with maybe some other methods like traps and seines.

I've never tried this, but I wonder if you could use a cast need when feeding. I was under the assumption that redear tended to not be at the surface as much as regular bluegill. Of course, cast nets take practice, and I have no idea if the fish would get wise to it quick or not.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."