Also Known As:- Piraña
- Piranhas
- Piraya
- Piraija
- Pirana
- Piranha
- Piranha - Rædsler i dybet
- Piranha, ta sarkofaga
- Rædsler i dybet
- Joe Dante
- Richard Robinson
- John Sayles
- Bradford Dillman ... Paul Grogan
- Heather Menzies ... Maggie McKeown
- Kevin McCarthy ... Dr. Robert Hoak
- Keenan Wynn ... Jack
- Dick Miller ... Buck Gardner
- Barbara Steele ... Dr. Mengers
- Belinda Balaski ... Betsy
- Melody Thomas Scott ... Laura Dickinson (as Melody Thomas)
- Bruce Gordon ... Colonel Waxman
- Barry Brown ... Trooper
- Paul Bartel ... Mr. Dumont
- Shannon Collins ... Suzie Grogan
- Shawn Nelson ... Whitney
- Richard Deacon ... Earl Lyon
- Janie Squire ... Barbara Randolph
- Roger Richman ... David
- Bill Smillie ... Jailer
- Guich Koock ... TV Pitchman
- Jack Pauleson ... Boy in Canoe
- Eric Henshaw ... Father in Canoe
- Robert Vinson ... Soldier
- Virginia Dunnam ... Girl
- Hill Farnsworth ... Water-skier
- Bruce Paul Barbour ... Man in Boat (as Bruce Barbour)
- Robyn Ray ... Screaming Woman
- Mike Sullivan ... Dam Guard
- Jack Cardwell ... Brandy
- Sally Bondi ... Swimming Deb
- Eric Braeden ... Dr. Robert Hoak (swimming double)
- Joe Dante ... Scuba Diver #2
- Amy Holden Jones ... Hertz Clerk
- Andrew G. La Marca ... Scuba Diver #1
- John Sayles ... Army Sentry
- Phil Tippett ... Scuba Diver #3 (victim)
.
