Term: pectoral fin muscle
Name: pectoral fin
Synonyms: forefin, pectoral fins
Definition: Paired fin that is located in the thoracic region of the body.
Ontology: Anatomy Ontology [ZFA:0001161]

Name: muscle
Synonyms: muscles
Definition: Portion of tissue composed of contractile fibers.
Ontology: Anatomy Ontology [ZFA:0005145]