nibricoccus nibricoccus nibricoccus is a gram-negative, strictly aerobic and non-motile genus of bacteria from the family of opitutaceae with one known species (nibricoccus aquaticus). nibricoccus aquaticus has been isolated from hyporheic freshwater from korea. nibricoccus scientific classification domain: bacteria phylum: verrucomicrobiota class: opitutae order: opitutales family: opitutaceae genus: nibricoccusbaek et al. 2019 type species nibricoccus aquaticus species n. aquaticus