penis fish

Etymology

 * From its apocryphal ability to enter the penis.
 * From its appearance resembling a human penis.

Noun

 * 1) A candiru, a parasitic catfish of the genus Vandellia, alleged to be able to enter the human urethra.
 * 2) Any of certain species of  worm, including:
 * , a North American spoon worm.
 * , an East Asian spoon worm.

Synonyms

 * innkeeper worm