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A halotolerant, Gram-stain-negative, rod-shaped and light-pink-pigmented bacterial strain, PB3(T), was isolated from a pond sediment near a hexachlorocyclohexane-producing factory, located at Chinhat, Lucknow, India. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain PB3T formed a distinct phyletic Glade along with the members of the genus Pontibacter. The 16S rRNA gene sequence similarity with other members of the genus Pontibacter ranged from 94.5 to 98.9%. The cells were motile, aerobic, and catalase- and oxidase-positive. The major fatty acids were iso-C-15:0, iso-C-15:0 3-OH, iso-C-17:0 3-OH, C-16:1 omega 5c, summed feature 3 (C-16:1 omega 6c/C-16:1 omega 7c) and summed feature 4 (iso-C17:1I/ anteiso-C-17:1 B). The polar lipid profile of strain PB3(T) showed the presence of phosphatidylethanolamine, an unidentified aminophospholipid, unknown aminolipids and other unknown polar lipids. DNA-DNA hybridization based homology of strain PB3(T) with respect to its most closely related species, Pontibacter chinhatensis LP51(T), was 44.7%. The DNA G+C content was 53.5 mol%. On the basis of these data, it is proposed that the isolate belongs to the genus Pontibacter and represents a novel species, for which the name Pontibacter mucosus is proposed. The type strain is PB3(T) (=DSM 100162(T)=KCTC 42942(T)).