Can Anyone Id This Piranha?

[trout_pout]

Saw these guys in my LFS. Just wondering if anyone could ID them, so that I can look up more info about them etc.

 

[Ninjouzata]

Imagine I'm wrong as I really don't know anything about piranha, but wanted to give it a shot anways. Red belly piranha? (Pygocentrus nattereri) 

 

[rikkitiger]

they lok like red bellies to me too.

 

[DerpPH]

It looks liike a serrasalmus sp. I Just know it is not Serrasalmus elongata.

seriously fish can help you id this 

 

[FishyFriend101]

Sorry I cant see the pictures well it might be red bellies or Caribbean maybe even black if they even sell those.  Sorry not a piranha expert.