caldanaerobius fijiensis caldanaerobius fijiensis caldanaerobius fijiensis is a thermophilic, obligately anaerobic and spore-forming bacterium from the genus of caldanaerobius which has been isolated from a hot spring in fiji. caldanaerobius fijiensis scientific classification domain: bacteria phylum: bacillota class: clostridia order: thermoanaerobacterales family: thermoanaerobacteraceae genus: caldanaerobius species: c. fijiensis binomial name caldanaerobius fijiensislee et al. 2008 type strain atcc baa-1278, dsm 17918, jw/yjl-f3 synonyms caldanaerobium fijiensis