Aliivibrio fischeri
Aliivibrio fischeri (formerly Vibrio fischeri) is a non-pathogenic, Gram-negative, rod-shaped bacterium found globally in marine environments. This bacterium grows most effectively in water with a salt concentration at around 20g/L, and at temperatures between 24 and 28 °C. Free-living A. fischeri cells survive on decaying organic matter.