Table 5 Fatty acid composition (mean ± SE) of different size groups of hilsa collected from Hooghly river system.

C14**

1.82^a ± 0.23

7.76^b ± 0.21

7.32^cd ± 0.01

7.28^cd ± 0.37

7.00^c ± 0.13

8.51^e ± 0.21

6.00^b ± 0.06

C15

ND

0.18 ± 0.18

ND

ND

ND

ND

ND

C16*

15.92^a ± 1.45

25.49^b ± 4.14

26.04^b ± 0.34

24.78^b ± 0.56

24.09^b ± 0.18

26.38^b ± 0.57

24.34^b ± 0.19

C17

0

0.11 ± 0.11

ND

ND

ND

ND

ND

C18**

7.01^a ± 0.83

9.45^ab ± 2.85

13.26^bc ± 0.80

15.86^c ± 0.56

14.04^bc ± 2.03

10.58^ab ± 1.04

24.43^d ± 0.61

∑SFA**

24.75^a ± 0.85

42.99^b ± 1.22

46.62^bc ± 1.15

47.92^c ± 0.37

45.13^bc ± 1.96

45.47^bc ± 0.25

54.77^d ± 0.48

C16:1**

3.77^a ± 0.36

13.34^c ± 2.00

12.90^c ± 0.04

12.18^c ± 0.27

13.26^c ± 0.06

13.23^c ± 0.43

7.17^b ± 0.18

C17:1

ND

0.02 ± 0.02

ND

ND

ND

ND

ND

C18:1*

5.96^a ± 0.50

12.865^b ± 2.405

14.45^b ± 0.29

13.70^b ± 0.23

18.52^b ± 3.49

12.83^b ± 0.53

13.82^b ± 0.26

C20:1

ND

0.345 ± 0.345

ND

ND

ND

ND

1.56 ± 0.02

∑MUFA**

9.73^a ± 0.16

26.57^b ± 4.04

27.35^b ± 0.24

25.88^b ± 0.51

31.78^b ± 3.55

26.06^b ± 0.96

22.55^b ± 0.45

C18:2*

1.72^a ± 0.04

2.49^c ± 0.29

1.94^ab ± 0.04

2.52^c ± 0.12

2.26^bc ± 0.05

2.51^c ± 0.20

1.94^ab ± 0.01

C18:3

0.91 ± 0.06

0.77 ± 0.35

ND

ND

ND

ND

ND

C20:2

ND

ND

ND

ND

ND

ND

1.07 ± 0.01

C20:3

ND

0.145 ± 0.145

ND

ND

ND

ND

ND

C20:4**

6.67^d ± 0.01

2.02^ab ± 0.02

2.16^bc ± 0.05

1.93^a ± 0.05

ND

ND

2.29^c ± 0.03

C20:5*

9.27^a ± 0.17

15.92^bc ± 3.51

15.2^bc ± 0.51

15.39^bc ± 0.51

14.78^bc ± 1.11

18.45^c ± 0.35

12.18^ab ± 0.01

C22:6**

46.98^d ± 0.66

8.80^c ± 1.29

6.75^ab ± 0.30

6.34^ab ± 0.14

6.06^ab ± 0.41

7.53^bc ± 0.14

5.25^a ± 0.01

∑PUFA**

65.55^c ± 0.71

30.15^b ± 4.9

26.05^ab ± 0.91

26.18^ab ± 0.81

23.10^ab ± 1.57

28.49^ab ± 0.69

22.73^a ± 0.04

n-3**

57.15^c ± 0.76

25.49^b ± 4.45

21.95^ab ± 0.81

21.72^ab ± 0.64

20.84^ab ± 1.52

25.98^b ± 0.49

17.43^a ± 0.01

n-6**

8.39^c ± 0.06

4.66^b ± 0.455

4.09^ab ± 0.09

4.44^ab ± 0.17

2.26^ab ± 0.05

2.51^e ± 0.20

4.22^a ± 0.02

n-3/n-6**

6.81^c ± 0.14

5.43^b ± 0.42

5.36^b ± 0.07

4.89^b ± 0.05

9.21^d ± 0.47

10.4^e ± 0.63

4.13^a ± 0.02