Term Name:	caudal-fin organ
Synonyms:	caudal fin organ, caudal organ, caudal sac
Definition:	Organ that consists of a pouch located on the ventral caudal-fin lobe, opening posteriorly, and composed of glandular tissue. The caudal-fin organ presumably functions to secrete pheromones during courtship.
Ontology:	[UBERON:2002125]