piranha vs. pacu

[cocoa_pleco]

what are some defining features of red belly pacu vs. red belly piranha? my big pacu going after the feeder goldfish i intended as pets seemed kind understandable, and im sure hes a pacu, but my baby 4" "pacu" even chased the feeders. Im kinda thinking hes a red belly piranha labeled as a pacu

what are some major differences in looks of red belly pacu and red belly piranha?

[NickFish]

Very good link, scroll down a little and read the whole thing,
[Only Registered Users Can See Links.]
Hope it helps you out some!

[cocoa_pleco]

thanks!

sadly so far im leaning more towards piranha, his jawline and other features resember a piranha more than pacu, i'll wait til he gets bigger to check again

[Bassfan]

i could probably tell you what he is if you have a picture. Especially if the pacu is over 10".

[cocoa_pleco]

my camera is down, the 10" is for sure a pacu, but the 4" one i think is a piranha

[squirt_12]

Does the one you think is a piranha have black spots on it??? Red belly piranhas have black spots on them...usually near their tail but they are all over the body aswell. Like in this ([Only Registered Users Can See Links.]) picture.