hasllibacter hasllibacter hasllibacter is a gram-negative and aerobic genus of bacteria from the family of rhodobacteraceae with one known species (hasllibacter halocynthiae). hasllibacter halocynthiae has been isolated from a sea pineapple from gangneung in korea. hasllibacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: hasllibacterkim et al. 2012 type species hasllibacter halocynthiae species h. halocynthiae