S.No. Test S. aureus Vibrio parahemolyticus Vibrio alginolyticus Pseudomonas aeroguinosa Aeromonas hydrophila
1 Gram staining + - - - -
2 Shape Cocci Rod Rod Rod Rod
3 Motility - + + + +
4 Indole test - + + - +
5 Methyl red test + ND ND - +
6 Vogesproskaur test - - + - -
7 Citrate utilization test NP + + + D
8 Urease test NP v ND V -
9 TSI test NP NP NP K/K K/A
10 H2S NP NP NP - -
11 Gas NP NP NP - -
12 Catalase tests - NP NP - +
13 Oxidase test + + + + +
14 Carbohydrate test          
15 Glucose NP + ND - +
16 Lactose NP - ND    
17 Sucrose NP - + - +
NP: Not performed; ND: Not determined
Table 1: Identification of Bacteria from prawn.