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Diversity Of Non-Flavobacterium Columnare Bacteria Associated With Columnaris-Like Diseased Fish, Ha Thanh Dong, Vuong Viet Nguyen, Wanniwat Mata, Pattanapon Kayansamruaj, Saengchan Senapin, Dachrit Nilubol, Channarong Rodkhum

The Thai Journal of Veterinary Medicine

Numerous yellow and pink pigmented bacterial isolates had been recovered from diseased fish exhibiting columnaris-like disease in tilapia (Oreochromis spp.) farms in Thailand. The predominant species had been identified as Flavobacterium columnare while taxonomic classification of the remaining isolates and their pathogenic potential remain undetermined. An additional yellow bacterial strain had also been obtained from a koi carp sample showing columnaris-like symptoms. To continue our previous work, this study described the identification of ten representatives of unknown culturable non-Flavobacterium columnare bacteria based on a combination of phenotypic characteristics and nucleotides homology of 16S rRNA gene and subsequently investigated their pathogenicity …