The midbrain or mesencephalon lies between the forebrain anteriorly and the hindbrain posteriorly. It contains the optic tectum and midbrain tegmentum.
 

You can explore the different regions of the zebrafish midbrain by mousing over the annotations on the image below or alternatively visit the tutorial page by selecting a region in the list below.  


midbrain code block


Midbrain Regions