Piranha (1978)

Movie review by
Charles Cassady Jr., Common Sense Media
Piranha (1978) Movie Poster Image
Extremely gory Jaws rip-off is too much for kids.
  • R
  • 1978
  • 92 minutes

Parents say

No reviews yetAdd your rating

Kids say

age 17+
Based on 4 reviews

Did this review miss something on diversity?

Research shows a connection between kids' healthy self-esteem and positive, diverse representations in books, TV shows, and movies. Want to help us help them? Suggest a diversity update

A lot or a little?

The parents' guide to what's in this movie.

Positive Messages

Message is anti-establishment: The US military, politicians, and businessmen are in a corrupt alliance to create, then cover up, the nasty piranhas as potential eco-weapons.

Positive Role Models & Representations

Lead characters, a nervy girl investigator and a semi-hermit single dad, are a little less savory traditional goody-goody types, even though they perform heroically against the piranha-mongers. There are stereotypical evil-businessman types and evil-Army-officer types (and evil-businessman-Army-officer types).


Gory violence is mainly blood and ill-focused body parts floating in water, though there are some grisly out-of-water scenes of corpses, bite-ridden torsos, mutilated faces, and exposed bones. There's a car wreck, and two characters beat each other up.


Toplessness, as the sexually-profligate heroine flashes her bare breasts to distract a guard. A girl and her boyfriend go skinny-dipping. Hint that the leads have had premarital sex. Comical wondering if a minor character is gay. Bikinis and swimsuits in the big piranha-attack finale.


"Ass," the s-word, "hell," "balls," "dammit," "a-hole," "Jesus Christ."

Drinking, Drugs & Smoking

Whiskey drinking by the good guys (a habit the good guy cultivated after his divorce) and much dialogue about alcoholic spirits and drinking problems. A drunken old man is killed by the piranhas. A sheriff smokes (near a "NO SMOKING" sign).

What parents need to know

Parents need to know that gore and violence are this movie's primary reason to exist, with extensive (if chaotic) underwater shots of people bloodily devoured by small, sharp-toothed fish, sometimes right down to exposed skeletons and severed limbs. Child characters as well as grownups get chewed (though the lens mainly dwells on adult casualties). There is some profanity and a fair amount of drinking (hints that the hero is an alcoholic). There's also female nudity and skinny-dipping. Questionable behavior includes trespassing, bad driving, and stealing police property. US government, military, cops, mayors, and authority figures right up to camp counselors are portrayed as unsavory and untrustworthy. This is not to be confused with a deluxe Piranha 3D remake from 2010.

User Reviews

  • Parents say
  • Kids say

There aren't any reviews yet. Be the first to review this title.

Teen, 13 years old Written byBatman_ March 24, 2020
Teen, 16 years old Written byRebecca Amsden April 27, 2013

Piranah 3DD

This movie is very good, but you should be aware that there is some drinking, a lot of nudity, sex, and PLENTY of language.

What's the story?

In rural Texas Maggie (Heather Menzies), a brash missing-persons tracer, teams up with Paul (Bradford Dillman), a hard-drinking backwoods single dad, to find some campers, whom viewers already know were killed while swimming -- eaten by something lurking in a mysterious fenced-off reservoir. Paul drains the perilous pool, accidentally releasing into a local river network the movie's menace, a school of US military genetically-engineered piranha fish -- not giant-sized but extra vicious and super-resilient, designed as bio-weapons in Vietnam-style jungle wars. Paul and Maggie try to warn the neighboring river-edge community (and save Paul's little daughter, at a swim-oriented summer camp) but find themselves stonewalled by shady cops, a general, and businessmen covering up the impending bloodbath.

Is it any good?

Part of the entertainment factor of Piranha is that it has no pretensions of being anything but brisk schlock-horror killfest, intended for drive-ins and grindhouses and nothing more. Word is that Steven Spielberg himself endorsed PIRANHA as the only one of the many, many Jaws rip-offs that had any redeeming value. Despite much bloodletting, the barely-shown-and-better-for-it piranhas aren't exceptionally scary or awe-inspiring, but one appreciates the clever economy in doing lots of vague little water monsters instead of one big, painfully fake one. Still, this one is way too gory for kids, so it is best appreciated by adult film buffs.

Talk to your kids about ...

  • Families can talk about the entertainment value of scary movies. What's the appeal of watching piranhas eat people? Does the humorous and social commentary here help?

  • Do scary movies always have to feature gore? Are gory movies always scary?

Movie details

Our editors recommend

For kids who love scary movies

Common Sense Media's unbiased ratings are created by expert reviewers and aren't influenced by the product's creators or by any of our funders, affiliates, or partners.

See how we rate

Streaming options powered by JustWatch

About these links

Common Sense Media, a nonprofit organization, earns a small affiliate fee from Amazon or iTunes when you use our links to make a purchase. Thank you for your support.

Read more

Our ratings are based on child development best practices. We display the minimum age for which content is developmentally appropriate. The star rating reflects overall quality.

Learn how we rate