Wow.... ok I'm going to enumerate my comments
1. Tank... wow... you've got it... stunning hardscape and plant selections to start. I'm not fond of "stems" but I think everyone should come to their own conclusions.
2. I absolutely LOVE the idea of this tank. I hope too someday have something exactly like this once I have enough space/tanks to expand my collection. I've already been working with the builder on plumbing for my man cave/ fishroom/ workshop. 12 -18 20 gallon longs on a 2 tier rack all running on a centralized sump with constant drip changes and a massive UV sterilizer. I'll have maybe 4 more 20 longs running independent for QT and hospital. You wouldn't believe what these builders say and recommend to me... but that's another tale. I LOVE THIS TANK.
3. My personal favorite would be wadai for numerous reasons.
A. Colors are amazing.
B. Given their species they would likely breed in
the tank for you.
C. you could pack ay least 20 in there.. what a
D. I will buy every fry you rear.
E. I think green neons are gorgeous. Definitely
one of my favorites. The problem is it might
break up the uniformity which is so amazing.
The biggest drawback... you would never
ever see a single fry.
Thanks @The Dude1
The stems on the right side are temporary. Eventually, as I get a hand of learning how to grow stem plants these will be moved to my 180 or 60 gallon tank ( both now have high light as well) and replaced with a carpeting plant or, possibly, I will add more of the hydrocytle tripartia "japan". I will also keep the Blyxia in this tank ( both plants are my favorite of group).
As you know, both stem plants and high light are new to me. Because this is a recently started tank with Amazonia Light soil and high light, I am stocking it densely with plants to minimize algae issues and have the opportunity to learn. The plants have taken off in the last few days: the Byxia has stopped melting, the plants (some) are showing red-pinkish tips and growing in height. The only issue am having is algae growing on fiddens moss- hopefully that will stop eventually.
As far as fish:
I haven't decided on the hyphessobrycon sp. yet. Will continue poll and think on it.
I did decide against the Green neons for this tank and ordered a dozen of the Tucano tetras. I think these will be perfect for this tank as the right hand side will provide shaded spaces for them. I will just need to add some Catulpa leaves for them to get a bit of a tint in water/ tannins. I also ordered 3 of the nigropterus to go in with the other African tetras I have in the 180, and will add more when they get more in. As @Triport
stated, they seem to get them in often.
Here is a video of the Tucano tetra- an amazing little fish and one of my favorites: