Your most likely to get a response about fish and aquariums here: http://www.pbnation.com/showthread.php?t=3547470
Although, I'm not sure if any of the regulars in there have any piranhas. Would enjoy seeing pics of yours of course.
L I V E S T R O N G
madgoat: "holy crap that got confusing. I was all "wtf, no girl is cool enough to have kimjung is boss as their xbl tag". I was about to ask if you were a dike or born male raised female. Come to find out it was a simple misunderstanding."
XBL GT: KimJung Is BOSS