Secuela de "Piraña 3D" (Alexandre Aja, 2010).
Estreno en USA: junio 2012.
REPARTO:Gary Busey, David Koechner, Danielle Panabaker, Matt Bush, Chris Zylka, Meagan Tandy, Paul James Jordan, Jean-Luc Bilodeau, Hector Jimenez, Adrian Martinez, Clu Gulager, David Hasselhoff, Allison Mack, Ving Rhames