Table 3 Biochemical characterization of bacterial isolates retrieved from sea breams
Criteria | V. alginolyticus | V. fluvialis |
|---|---|---|
Colonies on TCBS | Large dark yellow colony | Yellow colony with shiny margins *translucent* |
Gram stain | Gram -ve straight to slightly curved rod | Gram -ve rods |
Motility | Motile | Motile |
Oxidase |  +  |  +  |
Catalase |  +  |  +  |
Anerobic glucose fermentation |  +  |  +  |
Hydrogen sulfide | - | - |
Ornithine decarboxylase | - | - |
Arginine bihydrolytic enzyme | - |  +  |
Lysine decarboxylase |  +  | - |
Urease | - | - |
Citrate utilization | - | - |
Nitrate |  +  |  +  |
Indol |  +  | - |
Mannitol acid production |  +  |  +  |
Lactose acid production | - | - |
Mannose acid production |  +  |  +  |
Maltose acid production |  +  |  +  |
Fructose acid production |  +  |  +  |
Xylose acid production | - | - |
β- galactosidase ONPG | - | - |
Growth at 6.5% Nacl |  +  |  +  |