Yeah I understand the fishn will stay very clustered, but are there ant
other fishes that will look good clustered, or are there any other fishes
that will be good to fill in those empty spaces?

Neon tetras look good. They just look kind of nervous. :-)

Here, I scanned in details from Amano's pics:

http://members.aol.com/leighmo/scan2.jpg

http://members.aol.com/leighmo/scan.jpg

Very striking, but probably not ideal from the fishes' POV.


Leigh

http://www.fortunecity.com/lavender/halloween/881/