I saw a documentary on Animal Planet the other night about Ps. An interesting thing I didnt know before is as juvenilles the Piranha infants group together with silver dollar and pacu infants for protection and also free meals. They chomp on their weaker "siblings" tails and fins rather than outright killing them because they can harvest the parts over and over.
I just thought it was a nifty piece of info and wanted to share.
I just thought it was a nifty piece of info and wanted to share.