Wow... I had to check up on this myself and found another link...
The Straight Dope.
The fish
is real, and
can do what is described above, however, according to the article on the site above:
Some elements of the candir� legend are clearly exaggerated. There are no confirmed reports of deaths or penectomies--several cases of the latter are thought to have run afoul of piranha. It's uncertain whether the candir� is actually "urinophilic," and as far as I know, no one seriously maintains that it can swim out of the water and up a urine stream. Just the same, next time my yacht cruises down the Amazon, I ain't peeing over the side.
The article also states that local natives have a remedy for this pelvic parasite that only involves drinking tea made from a certain
fruit... so the solution given in the first post seems rather drastic...
So... it is true... but I wonder how being attacked by this fish statistically stacks up against things like winning the lottery or being struck by lightning?
-Nate
[This message has been edited by Nathan Pruett (edited September 19, 2001).]