Wanneer twee wandelaars op mysterieuze wijze verdwijnen in de heuvels bij een meren-gebied, begint prive-detective Maggie McKeown (Heather Menzies) een onderzoek. Samen met de verbitterde streekbewoner Paul Grogan (Bradford Dillman), doet ze een huiveringwekkende ontdekking...
Nee, helaas is Piranha nog niet beschikbaar op Netflix in Nederland.
| Production | Jon Davison | Producer |
| Editing | Joe Dante | Editor |
| Writing | John Sayles | Screenplay |
| Directing | Joe Dante | Director |
| Sound | Pino Donaggio | Original Music Composer |
| Production | Roger Corman | Executive Producer |
| Editing | Mark Goldblatt | Editor |
| Costume & Make-Up | Vincent Prentice | Special Effects Makeup Artist |
| Costume & Make-Up | Rob Bottin | Special Effects Makeup Artist |
| Visual Effects | Phil Tippett | Creature Design |
| Art | Robert Short | Special Props |
| Crew | Jon Berg | Special Effects |
| Visual Effects | Dave Morton | Mechanical & Creature Designer |
| Art | Chris Walas | Special Props |
| Crew | Conrad E. Palmisano | Stunt Coordinator |
| Production | Chako Van Leeuwen | Co-Producer |
| Camera | Jamie Anderson | Director of Photography |
| Production | Jeff Schechtman | Executive Producer |
| Production | 筑波久子 | Co-Producer |
| Art | Jeff Ayers | Set Decoration |
| Art | Kerry Mellin | Art Direction |
| Writing | John Sayles | Story |
| Art | Bill Mellin | Art Direction |
| Production | Susan Arnold | Casting |
| Writing | Richard Robinson | Story |
