A Gram-stain-negative, yellow-pigmented, non-spore-forming, non-motile, rod-shaped, catalase-positive, strictly aerobic bacterial strain, designated CAU 1491, was isolated from seawater and its taxonomic position was examined using a polyphasic approach. Cells of strain CAU 1491 grew optimally at 30 °C, pH 7.5 and in 2. 0 % (w/v) NaCl. Phylogenetic analysis based on the 16S rRNA gene sequence of CAU 1491 showed that it formed a distinct lineage within the family as a separate deep branch, with 97.0 % or lower sequence similarity to representatives of the genera , and . The major cellular fatty acids of strain CAU 1491 were iso-C, iso-C G, iso-C 3-OH and summed feature 3. The polar lipid pattern consisted of diphosphatidylglycerol, phosphatidylserine, phosphatidylethanolamine and an unidentified phospholipid. The strain contained MK-6 as the sole respiratory quinone. Genome sequencing revealed that strain CAU 1491 has a genome size of 3.13 Mbp and a G+C content of 32.4 mol%. On the basis of the phenotypic, chemotaxonomic and genomic data, strain CAU 1491 represents a new genus and species in the family for which the name gen. nov., sp. nov. is proposed. The type strain of is CAU 1491 (=KCTC 72003=NBRC 113695).