fonticella fonticella fonticella is a strictly anaerobic, moderately thermophilic, halotolerant and non-motile bacterial genus from the family of clostridiaceae with one known species (fonticella tunisiensis). fonticella tunisiensis has been isolated from water from a hot spring in tunisia. fonticella scientific classification domain: bacteria phylum: bacillota class: clostridia order: clostridiales family: clostridiaceae genus: fonticellafraj et al. 2013 species f. tunisiensis