Term: gill filament cartilage element
Name: gill filament
Synonyms: gill filaments
Definition: Portion of tissue that projects outward from the gill and is a thread-like, soft, red respiratory and excretory structure.
Ontology: Anatomy Ontology [ZFA:0000667]

Name: cartilage element
Synonyms: cartilages
Definition: Skeletal element that is composed of cartilage tissue and may be permanent or transient.
Ontology: Anatomy Ontology [ZFA:0001501]