Nice!
I like the planting, although the vertical branches look rather incongruous. I think that most of the tetras are cardinals, possibly with a darter characin (Characidium species?) bottom centre. I also see the lovely butterfly dwarf cichlid, Microgeophagus ramirezi, and I think the discus look like true wild type Symphysodon discus, the nicest discus of all in my opinion: incidentally aquarists call them Heckels after the author of the original description.
