Help ID please ? Small Piranha or pacu ?

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at that small size you won't really see any teeth unless you take the fish out of water al pull down their lips....
it's very easy to tell them apart, the jaw/mouth looks completely different between pacu and piranha.
pira_pacucom2-jpg.77983

pira_pacuhead.jpg

pacu_and_piranha.jpg
I get it ! Thanks for your info. All the while I thot it was pacu. Anw do you have any advise to care for these fishes ?
 
Definitely Piranha, the easiest way to tell the difference between the two are the teeth:) Pacu have blunt teeth, if you pull the lip down on the Piranha you have posted you would see a set of serrated sharp triangle shaped choppers. Btw don't try to look for yourself, just google piranha teeth.
Will do more research on it. Thanks for verifying.
 
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