Penis fish

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".