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Table 2 Differential diagnosis between different bacterial species using growth conditions

From: Characterization and susceptibility of streptococci and enterococci isolated from Nile tilapia (Oreochromis niloticus) showing septicaemia in aquaculture and wild sites in Egypt

Isolate Growth at Growth on 6.5% NaCl BHI agar Growth at 40% Bile Salt BHI agar
10ͦ C 45ͦ C After
24 h
After
48 h
After
72 h
After 7 days
Aerococcus viridans After 48 h (very faint) but good after 72 h + No growth Very weak growth Weak growth No growth
E. faecalis after 48 h + Very weak growth Good growth Very good growth No growth
Lactococcus garvieae after 48 h (very faint) but good after 72 h + No growth Very weak growth Very good growth No growth
S. pluranimalium After 48 h + very weak growth Very weak growth Very good growth No growth
E. gallinarum After 48 h (very faint) but good after 72 h _ No growth No growth No growth No growth
S. dysgalactiae subspecies equisimilis No growth + No growth No growth No growth No growth
S. anginosus No growth No growth No growth No growth No growth No growth