Probably a red belly pacu it's easy to tell by just looking at it. If you really want to know open its jaw and if you see tiny sharp little teeth it's a piranha but if you see human like teeth it's a pacu.Juvenile pacu, possibly Redbelly Pacu.![]()

Nice pic mine was about 28 inches I had two of them. Two giant basketballs in my 500 gallon!Thank you friends!
Help me to be very safe.
Here is a picture of Pacu had until a year ago -
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