%0 Journal Article %A Takano, Tomokazu %A Matsuyama, Tomomasa %A Sakai, Takamitsu %A Nakamura, Yoji %A Kamaishi, Takashi %A Nakayasu, Chihaya %A Kondo, Hidehiro %A Hirono, Ikuo %A Fukuda, Yutaka %A Sorimachi, Minoru %A Iida, Takaji %T Ichthyobacterium seriolicida gen. nov., sp. nov., a member of the phylum ‘Bacteroidetes’, isolated from yellowtail fish (Seriola quinqueradiata) affected by bacterial haemolytic jaundice, and proposal of a new family, Ichthyobacteriaceae fam. nov. %D 2016 %J International Journal of Systematic and Evolutionary Microbiology, %V 66 %N 2 %P 580-586 %@ 1466-5034 %R https://doi.org/10.1099/ijsem.0.000757 %I Microbiology Society, %X A novel Gram-stain-negative, rod-shaped (0.3 × 4–6 μm), non-flagellated, aerobic strain with gliding motility, designated JBKA-6T, was isolated in 1991 from a yellowtail fish, Seriola quinqueradiata, showing symptoms of bacterial haemolytic jaundice. 16S rRNA gene sequence analysis showed that strain JBKA-6T was related most closely to members of the family Flavobacteriaceae in the phylum ‘Bacteroidetes’. Furthermore, based on gyrB gene sequence analysis, JBKA-6T was classified into a single clade within the order Flavobacteriales, which was distinct from the known clades of the families Flavobacteriaceae, Blattabacteriaceae and Cryomorphaceae. The predominant isoprenoid quinone was identified as MK-6 (97.9 %), and the major cellular fatty acids (>10 %) were C14 : 0 and iso-C15 : 0. The main polar lipids were phosphatidylethanolamine, three unidentified phospholipids, two unidentified aminophospholipids and two unidentified polar lipids. The DNA G+C content of JBKA-6T, as derived from its whole genome, was 33.4 mol%. The distinct phylogenetic position and phenotypic traits of strain JBKA-6T distinguish it from all other described species of the phylum ‘Bacteroidetes’, and therefore it was concluded that strain JBKA-6T represents a new member of the phylum ‘Bacteroidetes’, and the name Ichthyobacterium seriolicida gen. nov., sp. nov. is proposed. The type strain of Ichthyobacterium seriolicida is JBKA-6T ( = ATCC BAA-2465T = JCM 18228T). We also propose that Icthyobacterium gen. nov. is the type genus of a novel family, Ichthyobacteriaceae fam. nov. %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.000757