Thank you very much. Floaters they are. Float here, float there, float everywhere! The tall shape lends itself to a distinct top, middle and bottom and it is interesting to see how my fish utilize it depending upon the time of day or their moods, etc. It's fascinating to watch them interact.
My early efforts to fatten up the skinny ones has finally paid off. Turns out they were mostly males, but still too skinny. I used a 24" Coral feeder to feed them when they would hide in the bottom. Each feeding (5x week) I coaxed them higher and higher and now they all eat together at the surface.
Being that I am constantly trimming and replanting my tank, with giant 24" hemostats, my fish have become accustomed to the intrusions. Same for the gravel vac. I suppose I'm pleased they seem to enjoy the action rather than act timid.
I just added three bunches of Jungle Val to fill out the background. Seller sent me 30" tall plants! I had to trim them because the Salvinia hogs the limited surface area already, but talk about instant background.
Oh speaking of limited surface area, I found everyone gulping air a few days ago. I about panicked. What have I done? What had I changed? My filter outlet! I angled it down to try a different flow pattern, and barely noted in my mind, that the surface agitation seemed less. A quick water change relieved their stress and I have the surface properly agitated again. Phew, lessons learned. Surface agitation is necessary for good O2/CO2 exchange especially when the surface is so small and my plants don't make enough O2 to support my fish population.
Thanks everyone for the kind words and criticism!