Term: post-vent region anterior side
Name: post-vent region
Synonyms: tail
Definition: Organism subdivision which is the part of the body posterior to the vent which includes the anal and caudal fins.
Ontology: Anatomy Ontology [ZFA:0001117]

Name: anterior side
Synonyms: anterior, rostral
Definition: An anatomical region that is the entire part of an anatomical structure anterior to a transverse plane and bounded on one side by the same transverse plane.
Ontology: Spatial Ontology [BSPO:0000055]