Penis fish explained

Penis fish may refer to:

• Urechis caupo, a species of spoon worm in North America
• Urechis unicinctus, a species of spoon worm in East Asia
• Candiru, a parasitic fish alleged to have entered a human urethra
• Phallichthys, a genus of fish whose name literally translates to "penis fish" from Greek.
• Ballyhoo, a fish from the Caribbean and South America. The name derives from a Native American word for "penis fish".