if you have the money maybe a species only tank with seahorses?

Seahorse
 

I dont think I want to tackle a seahorse tank yet. I think I want to get a few more years under my belt before I try one of those.:biggrin:

you have alot of options with a 27g here are some i think would be cool.

-Dward lionfish if ar'nt to picky about haveing lots of shrimp.
-Pair of clownfish
- Flame angel would do ok i have one in my 29g biocube
- in fact in a 27g bowfont you could prob have a pair of clownfish and a flame angel
- Several different gobies like a watchman and a fire fish