International Journal of Aquaculture, 2018, Vol.8, No.4, 23-28
27
Table 4 Biochemical tests of different bacteria isolated from different stations in three rivers in Al-Qurna city
Bacterial Culture
Plate (BCP)
Gram
staining
Motility Shape
Indole
Methyl
Red
VP
Citrate
Urease TSI
Catalase Oxidase Carbohydrate
Fermentation
Nitrate
Identification of Bacteria
G
F
S
1
-
-
Rod
+
+
+
+
+
+
+
+
+
+
+
+
Escherichia coli
2
+
+
cocci
+
-
-
+
-
+
-
-
+
-
+
-
Enterobacter aerogens
3
-
+
Rod
-
-
-
+
-
+
+
+
-
+
+
±
Pseudomonas aeruginosa
4
+
+
cocci
-
-
+
+
-
-
+
+
+
+
+
-
Enterococcus pseudo avium
Note: VP = Voges Proskauer Test; TSI = Trible Sugar Iron Test; G = Glucose Test; F = Fructose Test; S= Sucrose Test; + = Positive; - = Negative
