Piranha
Despite spawning a franchise 1 film longer than the JAWS franchise, piranha are actually very skiddish fish. Their fierce reputation comes from President Teddy’s Roosevelt’s trip to the Amazon. A local tribe wanted to impress the President so they filled a small pond with piranha, starved them prior to his visit, and then pushed a cow into the pond. While piranha have the equipment to be fierce, this isn’t their normal behavior.​
Piranha