ix herbs were assessed for their antimicrobial activity against Streptococcus agalactiae, a major fish pathogen causing
streptococcosis. Each herb was extracted with 3 solvents: water, 95% ethanol, and methanol. Using swab paper disc assays,
aqueous extracts of Andrographis paniculata and Allium sativum produced the largest (27.5 mm) and smallest (10.3 mm)
inhibition zones, respectively. Determination of minimal inhibitory concentration (MIC) of herb extracts against S. agalactiae
showed that the aqueous extract of A. paniculata had the lowest MIC value (31.25 μg/mL