The Piranha is the main antagonist of the Tom and Jerry Tales episode "Piranha Be Loved (By You)". During Tom's time with Toodles, it ruined their day by attacking Tom.
The Piranha is a big fish who has green skin, sharp white teeth, and yellow and red eyes including black. His appearance is similar to Flappy from the Tom and Jerry short Cat Fishin'.
The Piranha (right) in the title card