One Star / The Independent

A cynical and humourless attempt to fabricate B-movie chuckles in the “creature-feature/red-scare” vein. With a nod and wink, the film serves up loads of wooden acting, porn-star performances without the porn, cheeky stock footage and deliberately rubbish special effects.

One Star / The Guardian

Tiffany spends the film pouting, gaping and mangling her lines like a tranquilised yodeller. Poissonously bad.

One Star / News of the World

…mangily terrible Z-movie about mutant fish from the Amazon. Everything about it is deliberately, winkingly atrocious…

One Star / The Telegraph

The slightly overweight 38-year-old Tiffany (cast against type as a sexy scientist) is a more vulnerable presence. She’s there for who she was, not who she is.

Evening Standard

Bad-movie enthusiasts will doubtless have fun watching these oversized piscine predators leaping from the ocean and laying waste to Florida’s coastal regions, but hasn’t this tiresome, kitschy, so-bad-it’s-good fad run its course?

One Star / Time Out

Low-budget B-movie tosh of the highest order. If you want decent acting, top special effects and a decent script you better give this a miss.

Two Stars / Daily Mirror

It’s no surprise that it’s shocking dreadful. Guilty pleasure? Afraid not.

One Star / Mirror

The ultra-earnest leads compete for the title of “most hammy performance”, a brainless script and ludicrously un-special effects recall the worst excesses of 1950s B-movies.

Two Stars / Radio Times

Makes Mega Shark Versus Giant Octopus look like Jaws.

One Star / Empire

The not-so-special effects are thrust to the fore, so when the titular beasties attack a battleship – or a skyscraper! – we can ridicule every frame.

One Star / Total Film

So bad it’s good? So bad it’s bad? Who knows.

Two Stars / Film Four

…occasionally unintentionally funny but it’s still a badly acted, poorly written and ineptly directed mess with dreadful special effects.

Two Stars / View Cities

I could forgive all of this if the film bothered to be tongue-in-cheek about the whole affair but it took itself way too seriously and therefore lost any respect I might have had for it.

Half a Star / On the Box

Tension is replaced by guffaws and characterisation by macho posturing.

One and Half Stars / Eye for Film

At the end of the day, there’s only so much CGI you can take that looks like it was created on a Sinclair ZX Spectrum.

Two Stars / Sky Movies

Only for the most indefatigable followers of camp. Playing an American ambassador eaten by piranha, Eric Forsberg is as bad an actor as he is a director.

The Observer

There are probably many reasons why Eighties pop star Tiffany has languished in obscurity since her sole hit, I Think We’re Alone Now. There is, however, only one reason why we should all pray fervently that she returns there immediately and indefinitely. That reason is Mega Piranha. A film every bit as crass and blundering as the title suggests, it may even be unfair to single out Tiffany’s performance as Professor Sarah Monroe for particular scorn. Wooden and plodding it indubitably is, but compared to Paul Logan as Special Agent Finch, with whom she joins forces to battle a shoal of giant mutant piranha fish, Tiffany proves a veritable Meryl Streep. Possessed of an absurdly chiselled six-pack, which proves considerably more mobile than his facial features, he lurches from cliche to cliche with neither shame nor any discernible attempts to act. If, as seems likely, the whole thing is a knowing but terrible joke, then Logan is categorically not in on it. Incredibly for a film which presumably intends to at least alarm an audience, the budget seems to have been spent entirely on set-piece explosions with no money remaining for the actual fish.

Verdict: Deserves to be battered.

One Star / Daily Mail

Metrodome release Mega Piranha on DVD on August 9th