Dither Fish Sujestions?

i had tinfoils with my arowana before, they might get too big to have a school in a 90 gallon, you can try giant danios they are active. john
 
I know my tank isn't ideal size, (I do keep excellent water quality) but I keep 4 Silver Dollars with my Blackbelt in a 55 gallon.
 
I had five rainbows as dithers for my sinspilium. They are active and beautiful. They are expensive feeder fish though if things don't work out....I have two rainbows that will vouch for that.
 
I use Arulius barbs.

They look good and are fast and tough.

I also have a couple of t-bar/spanner barbs. They however are not has fast, they seem to take most of the beatings as a result of this.

They are little tanks though and are as tough as nails.
 
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