anyone have an ID on this tetra?

Here's another pic and a few randoms ... my wife said she got them at Petsmart. I'll run over there sometime and get an "official" name.

tetra1a.jpg


apisto2a.jpg


apisto1a.jpg
 
I've been wanting another small school of tetra in my tank for almost a year, but I've never pulled the trigger. Funny how I've never seen these guys anywhere around here ... LFS or petsmart etc.
 
I think they're relatively newer to the scene.. another LFS in my area has started carrying them for the first time as well, under the same name.
 
They seem very territorial ... I must have 5 males somehow. 4 of them have taken to their own parts of the aquarium near the top/middle. The last is smaller than the other 4 and hides because he gets chased around a bit when he's out in the open.
 
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