Term: caudal fin blood vessel
Name: caudal fin
Synonyms: tail, tail fin
Definition: Fin that is the most posterior median fin. It is composed of a complex of three modified centra and modified neural and hemal arches and spines.
Ontology: Anatomy Ontology [ZFA:0001058]

Name: blood vessel
Synonyms:
Definition: Any of the tubular multi-tissue structures through which blood circulates in the body.
Ontology: Anatomy Ontology [ZFA:0005314]