Generate a scary, mysterious and deadly fusion of a fox and a piranha. The creature has the agile, nimble body of a fox, but its fur is sleek and wet like a fish’s scales, allowing it to swim swiftly through water. Its head is a mix of a fox’s cunning snout and a piranha’s razor-sharp teeth, with gleaming, predatory eyes. It prowls along the bank of a murky river at dusk, its sharp teeth flashing in the fading light as it prepares to dive into the water, ready to strike with deadly precision.