I always advocate for cories. Great little tankmates. Three is the minimum, but 5+ are recommended. I have five in my 10 gal and it seems to be a perfect number.
The only thing I know about rasboras is that they're pretty. :)
Romeo - HM male | Tzekel-Kan - DTHM male | Nemo - CT(?) male | Akio - DTHMPK male | Ares - Delta male | Diablo - SD male | Nameless - VT male | Nameless - DT female
The Fab Five: Green cory catfish | Maximus: Golden mystery snail | Ichabod & Rosa: African dwarf frogs
Swim in peace, Gaston.