Term: caudal fin interray 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: interray vessel
Synonyms: interray vessels
Definition: Vessels that travel between veins in adjacent rays.
Ontology: Anatomy Ontology [ZFA:0005101]