Heh heh, you shoulda seen the look on the Dryad's face when I stuck that piranha tooth in the chair!
— The Angler
The Piranha is an enemy that can be found in water pools in the Jungle and Underground Jungle biomes and in the Cavern layer. It is twice as common in the Jungle biomes.
Piranhas swim in a straight line left or right until hitting a wall, where they flip directions. They will swim towards the player if they are submerged in water; otherwise they pay no attention to the player. They move their tail back and forth and swim in a slight zig-zag. If a Piranha is outside of water, it will flop around wildly, making it dangerous to approach.
- ↑ 1.0 1.1 Information taken from the Desktop 126.96.36.199 source code, function
There may be inaccuracies, as the current Desktop version is 188.8.131.52.