Fish To Compliment Bleeding Heart Tetras?

[LoachLover!]

I am after some fish to compliment my 9 bleeding heart tetras in my 55 gallon.
 
I want shoaling fish that will look good next to or around the bleeding hearts.  I don't want them to be too busy and I want them to be tight shoalers.  They need to be big enough not to be eaten by angelfish.
 
So, basically I want a tight shoaling fish that will compliment my shoal of bleeding hearts, isn't too busy and won't be eaten by angels.
 
I am not asking for stocking advice, merely asking for what fish would suit this criteria best

 

[eaglesaquarium]

Tight shoaling fish:
 
Rummynose tetra
Bloodfin tetra
 
 
More than likely these would be fine with angels, as they aren't nippy and are active swimmers.  The only concern I would have would be initial sizes.  How big are the angels and how big are the tetras when you first get them?

 

[LoachLover!]

Thanks!
 
The one angel is about 3 inches long and the other is just a bit smaller.  The pair are quite placid and are still only smallish juviniles