Barbs are active and can be notorious fin nippers but if they are kept in as big a group as Fishy plans, they will most likely occupy themselves chasing each other and not the angels. People who have experienced problems with barbs almost always didn't have them in a big enough group. Just stay away from tiger barbs. Of all the barb species, they are THE worst.
In other news, I need to find some plastic trinkets to keep on my desk for Delilah to steal. She stole a pencil but I took it back. It still had a working eraser. :P Now she's running around looking for anything to steal. She's already tried to go after the airline hose for the sponge filters.
EDIT: Matt, haha, no. I'm pretty sure I could manage to do something just like that. We're talented that way, you and me.
EDIT II: Pics!
Delilah in her nest behind Sherm's tank.
And the brand new tube of cuticle oil she stole off the nightstand.