C-H Total number of GABAergic neurons (GFP+ cells) in (C, D) the optic tectum (OT) and cerebellum (CB) regions of 5 dpf wild-type and chd7 mutant fish (n=16; ****p<0.0001; Student's unpaired t-test), (E, F) the hypothalamus (hyp) region (n=10; *p=0.0182; Student's t-test) and (G, H) the telencephalon (tel) (n=7; *p=0.0347; Student's t-test). 