1. Molly
2. Clown loach <get big, could be a problem
3. Kribs < if they pair up, they'll be aggressive and produce gazillions of fry
4. Neon tetras < potential food for serpaes, large flying foxes
5. Pengiun fish < may pick on neons, betta - not sure
6. upsidedown catfish < not sure abt these - look them up...
7. Flying fox < can get aggressive, large
8. Rasboras
9. Guppies < gazillions of fry
10. Platies
11. Serpae tetras < nippy unless schooling among larger fish
12. Beta < OK w/ Neons (may pick on 'em a little), not w/ Serpaes or Kribs
13. Corydora < get a few if you get any
14. Cherry Barbs < see "Serpae" notes
I'd pick either:
mollys/neons/penguins/rasboras/platies/betta/Corys
or
Kribs/USDcat/Flying Foxes/barbs/serpaes