Vibrio fischeri is a marine bacterial symbiont that can regulate physiological traits through quorum sensing. Qrr1 is a quorum sensing regulated sRNA that functions in promoting motility and repressing bioluminescence at low cell density by degrading mRNA of LitR, a global regulator protein. Qrr1 expression has been shown to be repressed as the population grows but it is unknown if its function impacts growth physiology in different nutrient environments, which this project aims to uncover.