Nope, actually they were free. Someone had brought a couple dozen of them to a LFS nearby and they were all up for adoption.
Seattle206 said:pacus arent mean, they are wussies.
Oddball~ said:Aggressive... I would have to point at the paraya... sabre-tooth fish... They aren't big, really, but they are vicious and will impale your hand with their teeth when they get the chance...
Raskolnikov said:On the contrary, they grow quite large: http://tinypic.com/18ejic
I've never kept one, personally, and can't comment on the disposition.