Even though both could be used for decoration a snake head would win, because the skin is valueable and when you think about it a snakes head or a fish. Unless that fish talks i would say snakes head.
The piranha would win.
the piranha but only if the were some form of blood in the water cause that would start a piranha feeding freenzy.
A piraha=\
Pirana
Thereptilarium.co.uk would get you a small piranha
There are quite a few species of carnivorous fish. These include salmon, pike, muskie, walleye, perch, snakehead, sharks, tuna, and piranha.
An Anglerfish. See the related link for a picture and more information.
A piranha would probaly eat a capybara if it fel in the water.
possum, raccoon, coyote, dog, cat
Giant snakehead was created in 1831.
Swarm of the Snakehead was created in 2006.
Snakehead Terror was created in 2004.