part of start stage end stage griseum centrale TAO:0000518 central grey ZFA:0000518 Hindbrain nucleus which is longitudinally oriented and situated along the ventral fourth ventricle and extends rostrally up to the level of the tegmentum of the midbrain. From Neuroanatomy of the Zebrafish Brain. central gray zebrafish_anatomy medulla oblongata hindbrain nucleus unknown adult