part of start stage end stage optic tectum midbrain nucleus griseum tectale 2016-01-22T12:54:41Z Rostral cell mass bordering the pretectum. The cells are stained with the gene nurod and are Hu positive. The region is named for its presumed homology to the avian griseum tectale. zebrafish_anatomy Ceri tectal grey ZFA:0005868 unknown hatching:long-pec