Doctor Baines has been conducting genetic experiments on piranhas and has made them virtually unstoppable. Unfortunately, his assistants, Maggie and Paul, accidentally release the hybrids into the Lost River Lake threatening to destroy everyone in their path. Can they prevent the flesh-eating piranhas from escaping into the ocean and spawning?
Unfortunately the movie Piranha is not yet available on HBO Max.
| Directing | Scott P. Levy | Director |
| Writing | John Sayles | Story |
| Writing | Alex Simon | Screenplay |
| Writing | Richard Robinson | Story |
| Sound | Christopher Lennertz | Original Music Composer |
| Costume & Make-Up | Rina Ramon | Costume Design |
| Crew | Lee Alan McConnell | Special Effects Assistant |
| Production | Roger Corman | Executive Producer |
| Crew | Christopher Baffa | Cinematography |
| Production | Hisako Tsukuba | Producer |
| Art | Robert Cowan | Production Design |
| Production | Mike Elliott | Producer |
| Editing | John Gilbert | Editor |
| Crew | Richard Landerer | Special Effects Assistant |
| Visual Effects | Brad Hardin | Creature Effects Technical Director |
| Costume & Make-Up | Tami Mor | Costume Design |
| Editing | Robert L. Goodman | Editor |
| Crew | Greg Landerer | Special Effects |
| Production | Peter Diamond | Unit Production Manager |
| Crew | Jim Wynorski | Animal Wrangler |
| Crew | Jan Kikumoto | Post Production Supervisor |
| Directing | Patrick J. Statham | Second Unit Director |
| Camera | Mark Venezia | Grip |
| Crew | Patrick J. Statham | Stunt Coordinator |
| Editing | Bob Fredrickson | Color Timer |
| Sound | William Smith | Sound Re-Recording Mixer |
| Camera | R. Dana Harlow | Grip |
| Sound | Jeff Vaughn | Scoring Mixer |
| Production | Jan Glaser | Casting |
| Crew | Cole S. McKay | Stunts |
| Crew | Carl Milinac | Stunts |
| Crew | Thomas DeWier | Stunts |
| Art | Nava | Production Design |
| Crew | Ellen Statham | Stunts |
| Crew | Cinda-Lin James | Stunts |
