An aerobic, yellow-pigmented, Gram-staining-negative bacterium, designated strain H7 T , was isolated from sediment of Gazwa stream in Jinju city, South Korea. Cells of strain H7 T were nonmotile, straight rods that produced flexirubin pigments and showed catalase-and oxidase activities. Strain H7 T contained iso-C 15 : 0, anteiso-C 15 : 0 and summed feature 3 (comprising C 16 : 1 v7c and/or iso-C 15 : 0 2-OH) as the main fatty acids and menaquinone-6 (MK-6) as the major isoprenoid quinone. The

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... DNA G+C content of strain H7 T was 37.2 mol%. Comparative 16S rRNA gene sequence analysis showed that strain H7 T formed a distinct phyletic line within the genus Flavobacterium. Based on 16S rRNA gene sequence similarities, the novel strain was most closely related to Flavobacterium limicola ST-82 T and Flavobacterium resistens BD-b365 T with 97.2 % and 97.0 % gene sequence similarities, respectively. The DNA-DNA relatedness of the novel strain with these species was only 18 % and 14 %, respectively. On the basis of phenotypic data and molecular properties, strain H7 T represents a novel species within the genus Flavobacterium, for which the name Flavobacterium fluvii sp. nov. is proposed. The type strain is H7 T (5KACC 12818 T 5DSM 19978 T ).