Quiescent states comprise the vast majority of our lived existence, yet the mechanics and roles of these states remain unresolved. Genetic disruptions that affect sleep in humans also compromise sleep in larval zebrafish. Sleep in larval and adult zebrafish has been clearly delineated by key features needed to define behavioral sleep; however, it has not been established whether fish have multiple phases of sleep as observed across the animal kingdom. I have used the Bonsai platform to analyze larval zebrafish behavior in full resolution video (20MP) in real time as well as controlling other stimuli such as temperature and sensory stimuli (light and sound). I have recorded microbehavior states over long periods of time to understand the long timescale changes of zebrafish behavior. This differs from much of the rich understanding of fast zebrafish behaviors such as escape, hunting, and visual-induced swimming. During these longer timescales, autonomic function changes and presumably the entire brain state is altered. My goal is to understand the interaction between neural and behavior changes in these newly characterized quiescent states.