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Table 3 Gonadosomatic Index (GSI) and sex ratio according to monthly sampling

From: Spawning seasons of Rasbora tawarensis (Pisces: Cyprinidae) in Lake Laut Tawar, Aceh Province, Indonesia

Months

No. of fish examined for GSI

GSI

Sex ratio

(F/M)

 

Female

Male

Female

Male

 

January

89

16

10.48 ± 6.18bc

7.39 ± 1.44bcd

5.56

February

86

25

9.21 ± 5.08b

6.16 ± 2.41ab

3.44

March

68

15

15.56 ± 6.88f

8.56 ± 2.53d

4.53

April

48

42

6.65 ± 4.94a

5.95 ± 2.46ab

1.14

May

65

37

13.24 ± 5.13de

7.91 ± 2.10cd

1.76

June

60

56

11.99 ± 5.83cd

5.22 ± 3.07a

1.07

July

79

52

9.70 ± 7.52b

4.94 ± 2.63a

1.52

August

91

15

13.95 ± 6.27def

5.46 ± 2.63a

6.07

September

58

19

18.16 ± 5.39g

8.44 ± 2.18d

3.05

October

73

25

9.96 ± 6.63bc

5.30 ± 3.97a

2.92

November

96

17

8.38 ± 7.12ab

5.14 ± 2.41a

5.65

December

88

22

15.08 ± 6.00ef

6.68 ± 1.82abc

4.00

  1. *Mean of GSIs in the same column followed by a different superscript indicates significantly different (P < 0.05).