part of start stage end stage posterior lateral line nerve caudal lateral line nerve Cranial nerve which enters the brain between cranial nerves VIII and IX; contains afferents and sensory efferents to the posterior lateral line ganglion and middle ganglion. Fibers from the posterior lateral line ganglion innervate the occipital dorsal lateral line and trunk lateral lines. zebrafish_anatomy TAO:0000175 ZFA:0000175 cranial nerve posterior lateral line system lateral line nerve unknown adult