Too many zoos are afraid to mix their piranhas with other fish, even though education on how they're not all that dangerous is seen in quite a few of said zoos. Glad Biotropica knows they're harmless and perfectly suited for a beautiful community tank!
@Mr Gharial
you are right. I am not a fish specialist, but I saw in this tank : Metynnis hypsauchen, Myleus schomburgkii, Geophagus sveni, Astronotus ocellatus, Hypselecara temporalis, Pterygoplichthys gibbiceps, Hypostomus plecostomus and Oxydoras niger.
