"BenignVanilla" wrote:
"John Hines" wrote in message
.. .
I wonder if they would survive the winter up here in Zone 6ish, MD. I am
seriously considering turning my Koi pond into a Pirahna pond, after some
reasearch to see if it would be safe for the fish.

BV.
www.iheartmypond.com

Considering that Piranha's are tropicals (ideal temp range 75-80 F), I doubt
you'd have winter survival without a *big* pond heater.