Piiraya

Piirayas were a species of carnivorous fish known to be able to kill and eat humans. They had neon coloration, mandibles to aid in feeding, and small fins. If they sensed even a small amount of blood in the water, they would enter a feeding frenzy.

In 382 BBY, Axel Greylark was accused of cheating at roulette by the gambling den's owner, Raik. She threatened to feed him to her piirayas, but Axel managed to escape with the help of his droid, QN-1.

Text and facts from the “Piiraya” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.