Zebrafish eye development

Dorsal view of the head region in a zebrafish embryo which has been stained to show neuron development in the epiphysial region of the diencephalon, part of the developing forebrain. This is the region where neurons first develop in the forebrain. The neurons are labelled brown in this wildtype (normal) embryo, but are missing in the 'floating head' mutant (see B0001160C).