Fish To Go With White Clouds?

[pinkdolphin_113]

I have a few white clouds and 3 neon tetras. these two species school together as if they were one species and it looks really cool.
i was wondering if anyone knew another schooling fish that would school with them so i would have neons, WCs and the other species in one shoal.
any ideas?

 

[mikev]

In my tank, they school together with blackline rasboras. (This actually looks pretty neat since the fish is similar in appearance, but rasboras are larger).