part of start stage end stage tegmentum dorsal tegmental nucleus zebrafish_anatomy Tegmental nucleus that is immediately adjacent to the nucleus lateralis valvulae (NLV). This nucleus is sometimes considered part of the NLV but the cells are more densely packed. The nucleus extends rostrally into the mesencephalon. ZFA:0000346 DTN TAO:0000346 nucleus tegmentalis dorsalis tegmental nucleus unknown adult