comamonas piscis comamonas piscis comamonas piscis is a gram-negative, obligately aerobic and non-motile bacterium from the genus comamonas which has been isolated from the intestine of the fish sebastes schlegelii. comamonas piscis scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: comamonas species: c. piscis binomial name comamonas pisciskang et al. 2016 type strain cn1, jcm 30718, kacc 18403