GABAergic and Glutamatergic neurons in the zebrafish brain

This image shows the forebrain of a 4 day old zebrafish larvae viewed from a ventral aspect (below). Both inhibitory and excitatory neurons can be seen. Inhibitory neurons (green) use gamma-Aminobutyric acid (GABA) and excitatory neurons (magenta) use glutamate as transmitters. This orientation shows clearly the GABAergic neurons in the subpallium (the brain region in zebrafish involved in movement) (top of image) and the hypothalamus (which maintains homeostasis, or controlled bodily functions) (bottom of image). Width of image is 500 micrometres.