Abstract
Nile tilapia (Oreochromis niloticus) is one of the main species of continental aquaculture production, being the most cultivated in Brazilian aquaculture. Streptococcosis shorts, associated with Streptococcus agalactiae infection, have been reported in commercial fish farms worldwide and often cause high mortality rates in Brazil. S. agalactiae is a gram-positive bacterium that has differ…
