Nano Fish with personality
For color it is hard to beat cardinal tetras, but they lack personality. Most schooling fish are like this.
You can't beat dwarf puffers for personality, but they are messy and ferocious
Scarlet Badis have color and personality, but are extraordinarily difficult to feed. I don't want to have to buy live food for them all the time.
Corys have personality, but no color.
So what are good nano fish (10 gallon or less) with color and personality for a nano.