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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