part of develops from start stage end stage otic vesicle inner ear zebrafish_anatomy The auditory (hearing) and vestibular (balance) organ of the fish, equivalent to the inner ear of amniotes. (See Anatomical Atlas entry for <a href='http://zfin.org/zf_info/anatomy/dict/ear/ear.html'>ear</a> by T. Whitfield.) otic capsule otocyst ZFA:0000217 ear TAO:0000217 vestibuloauditory system anatomical cluster segmentation:20-25 somites adult