Festae, channel catfish, O, jag, geo's and more!! help!?

I cant really see the picture, but the tank in the link has plenty of cover. It is important that you have many hiding spots for the fish that get picked on. You may also want to consider some type of dither to keep them from killing each other.
 
What kind of dithers would you suggest?

Like Giant Danios? Or what else would work that has some color to them?
 
Ok. Aren't tiger barbs kind of aggressive tho?
 
Bump. Other suggestions welcome! :)
 
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