janibacter corallicola janibacter corallicola janibacter corallicola is a species of gram positive, strictly aerobic, bacterium. the species was initially isolated from coral (acropora gemmifera) in palau in 2002. the species was first described in 2007, and the species name refers to its original isolation from coral. janibacter corallicola scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: janibacter species: j. corallicola binomial name janibacter corallicolakageyama et al. 2007 the optimum growth temperature for j. corallicola is 23-36 °c, and can grow in the 16-38 °c range. the optimum ph is 6.0-8.0, and can grow in the 5.0-9.0 range.