Scientists discover four dangerous fish bacteria in Brazil for the first time; one has jumped to a new host species

For the first time, Brazil faces a significant challenge as bacteria previously exclusive to Asia and the USA have been identified within its borders. These bacteria, known to cause columnaris disease, pose an acute risk to the thriving aquaculture sector. Researchers have isolated four species from the Flavobacterium genus, which can infect both Nile tilapia and indigenous fish species.