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Table 1 Growth performance and reproductive potential of P. reticulata and B. splendens under varying hard water treatment

From: Water hardness influenced variations in reproductive potential of two freshwater fish species; Poecilia reticulata and Betta splendens

 

Growth performance

150 ppm (control)

320 ppm

540 ppm

900 ppm

Weight gain (g)

 P. reticulata (N = 30)

0.685b ± 0.058

0.742b ± 0.075

0.772a,b ± 0.091

0.887a ± 0.107

 B. splendens (N = 20)

1.730a ± 0.124

1.702a ± 0.049

1.796a ± 0.066

1.774a ± 0.167

Length gain (cm)

   

 P. reticulate (N = 30)

3.25b ± 0.03

3.31b ± 0.04

3.31b ± 0.05

3.49a ± 0.02

 B. splendens (N = 20)

3.77a ± 0.20

3.93a ± 0.31

3.92a ± 0.24

4.01a ± 0.31

Larval length gain (mm)

 P. reticulata

(N = 12)

16.67b ± 0.07

18.16b ± 0.05

19.33b ± 0.03

21.83a ± 0.03

 B. splendens (N = 12)

7.67a ± 0.57

9.67a ± 0.57

7.33a ± 0.57

6.33a ± 0.57

 

Reproductive dynamics

150 ppm

320 ppm

540 ppm

900 ppm

GSI

 P. reticulate (N = 12)

1.35b ± 0.39

1.38b ± 0.54

1.50b ± 0.66

2.48a ± 0.60

 B. splendens (N = 12)

17.01a ± 1.15

15.03a ± 2.61

17.25a ± 4.41

15.83a ± 1.33

Fecundity

 P. reticulate (N = 6)

8.80b ± 2.59

9.00b ± 3.54

9.80a,b ± 4.32

16.20a ± 3.90

 B. splendens (N = 6)

743.3a ± 83.3

605a ± 179

824a ± 175

694a ± 272

Bubble nest (cm2)

 B. splendens (N = 5)

108.58a ± 16.19

74.3a ± 24.5

36.8b ± 19

26.5b ± 22.2

Hatchability

 B. splendens (N = 12)

78.1a ± 17.6

85.72a ± 3.52

29.02b ± 10.32

24.89b ± 3.42

Fertility

 P. reticulate (N = 12)

73.89a ± 7.70

80.56a ± 5.78

83.77a ± 3.13

87.77a ± 4.75

  1. N values represent the number of fishes in each dose
  2. a,bValue denoted by the same alphabetic superscript were not significantly differed from each other