
When flesh-eating piranhas are accidentally released into a summer resort's rivers, the guests become their next meal.

Paul Grogan

Maggie McKeown

Dr. Robert Hoak

Jack

Buck Gardner

Dr. Mengers

Betsy

Laura Dickinson

Colonel Waxman

Trooper

Mr. Dumont
Suzie Grogan
Whitney

Earl Lyon
Barbara Randolph
David
Jailer

TV Pitchman
Boy in Canoe
Father in Canoe
Soldier
Girl
Water-skier

Man in Boat
Screaming Woman
Dam Guard
Brandy
Swimming Deb (uncredited)

Dr. Robert Hoak (swimming double) (uncredited)

Scuba Diver #2 (uncredited)

Hertz Clerk (uncredited)
Scuba Diver #1 (uncredited)

Army Sentry (uncredited)

Scuba Diver (uncredited)
Producer

Editor

Screenplay

Director

Original Music Composer

Executive Producer

Editor
Special Effects Makeup Artist

Special Effects Makeup Artist

Creature Design
Special Props

Special Effects
Mechanical & Creature Designer

Special Props

Stunt Coordinator
Co-Producer

Director of Photography
Executive Producer

Co-Producer
Set Decoration
Art Direction

Story
Art Direction
Story
Stunts
Stunts
Stunts

Production Manager
Location Manager
Special Effects Assistant
Special Effects Assistant
Mechanical & Creature Designer
Animation
Casting Director
Key Grip

Location Sound Mixer
Gaffer

Assistant Director
Assistant Director
Assistant Camera
Assistant Camera
Boom Operator
Props
Props
Grip
Grip
Assistant Art Director
Assistant Editor
Assistant Editor
Script Supervisor
Production Secretary
Production Secretary
Wardrobe Assistant
Still Photographer
Still Photographer
Production Assistant
Production Assistant
Production Assistant
Production Assistant
Production Assistant

Second Unit Director
Production Manager
Second Unit Director of Photography
Assistant Camera
Assistant Camera
Grip
Grip
Sound Effects
Sound Effects
Sound Effects
Dialogue Editor
Foley