part of start stage end stage pharyngeal arch 5 aortic arch aortic arch 5 AA5 Aortic arch that is part of pharyngeal arch 5. Aortic arch 5 artery is paired and has a common trunk with aortic arch 6 from the ventral aorta, and drains via a separate branch of the lateral dorsal aorta. Aortic arches 5 and 6 supply the trunk and tail with oxygenated blood. zebrafish_anatomy ZFA:0005009 TAO:0005009 hatching:pec-fin adult