Piranhas in odd groupings?

[Puyopop]

I was told by a girl at my LFS today that it is best to keep piranhas in odd numbers, as in groups of 3, 5, 7 etc... Otherwise they will end up killing each other. That didnt seem right to me is that true?

 

[Knowdafish]

Piranha can count? I don't think so!

 

[Ak-Kronic]

i would think you would just want a large group like no less than 5......i don't think they can count!!!! so i call BS

 

[jp80911]

if she's talking about pygo then the even number = 2, any amount more than two would be fine, except probably not 3. I'd say either solo or 4 and up.
as for serra, most of them has to be kept in odd number and that magic number = 1 except geryi that you can have in a shoal (just not 100% sure if that works everytime)

 

[G-Code]

Surprising how little some people at LFS know about fish. Thank goodness for MFK and experienced hobbyist.

 

[Ullopincrate]

I have 4 rbp in a tank for about a year now. so far so good (and one has a deformed fin) I call him "Timmay"

 

[MultispeciesTamer]

i got 2 in a 55 had them since they were like 2-3 inchs now they pushing at least 6

 

[andres]

I kept 2 in a 29, then 55, then 75 and they had no issues at all. I read several places online that 2 will always kill each other after purchasing them. I closely monitored them and they got along just fine.

 

[MultispeciesTamer]

I kept 2 in a 29, then 55, then 75 and they had no issues at all. I read several places online that 2 will always kill each other after purchasing them. I closely monitored them and they got along just fine.

hey thats how i started 2 in a 29 now moved to 55 but iam going to keep them in the 55 as long as i can.

 

[Fishermoe14]

as long as its more than 3 i think you should be fine..