The present application provides a novel drug screening platform designed to identify drugs that favorably modulate cellular bioenergetics in the human brain of a zebrafish which has been modified by altering a teleost gene that corresponds to a human gene associated with a brain dysfunction disorder (such as epilepsy). The drug screening platform are also useful for determining a mutation in a human gene associated with a brain dysfunction disorder that is associated with a human individual responsive to the treatment of a compound. Also provided are modified teleosts useful for the methods described herein.
