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

A scuba diving instructor, her biochemist boyfriend, and her police chief ex-husband try to link a series of bizarre deaths to a mutant strain of piranha fish whose lair is a sunken freighter ship off a Caribbean island resort.

Five teenagers embark on a boating trip off the coast of Florida. The teens get hopelessly lost at sea after they get caught in a fierce storm. Fortunately, the quintet stumble across an abandoned yacht in the middle of the ocean with a mysterious biology lab on board it. Unfortunately, there are also ferocious mutated prehistoric fish running amok on the yacht. Will any of the teens survive this harrowing ordeal?

Toxins in a lake drive a fish crazy, and it starts attacking cottagers.

Vic, a mischievous high school student, flushes the pet fish of one of his hated teachers down the toilet, but soon, people begin to go missing.

People full of problems...a lake full of piranha!

A giant monster eel attacks a group of high school students on a rafting trip down the American river. The government sends super agent Max Uzi to investigate the killings.