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Table 6 Sexual maturity and length–weight relationships for B. altianalis from Lake Edward and Upper Victoria Nile

From: Optimizing selection of sexually mature Barbus altianalis for induced spawning: determination of size at sexual maturity of populations from Lake Edward and Upper Victoria Nile in Uganda

Parameters at L50

Lake Edward

Upper River Nile

Females

Males

Females

Males

Standard length (SL)

 Class size

30–34.9

15–19.9

30–34.9

15–19.9

 SL (cm)

31.9

18.0

33.1

19.1

W(g) = aSLb

W = 0.014SL3.116

W = 0.020SL3.130

W = 0.013SL3.153

W = 0.013SL3.150

W(g)

627.4

127.2

716.8

141.4

r

0.923

0.908

0.940

0.931

r2

0.978

0.972

0.991

0.984

Fork length (FL)

 Class size

35–39.9

20–24.9

35–39.9

20–24.9

 FL (cm)

35.4

21.1

36.9

22.9

W(g) = aFLb

W = 0.01FL3.129

W = 0.010FL3.128

W = 0.008FL3.164

W = 0.0103.126

W(g)

702.8

135.8

726.4

178.7

r

0.925

0.915

0.939

0.930

r2

0.976

0.979

0.910

0.984

Total length (TL)

 Class size

40–45.9

20–24.9

40–44.9

20–24.9

 TL (cm)

41.6

23.5

40.0

24.2

W(g) = aTLb

W = 0.006TL3.160

W = 0.006TL3.149

W = 0.004TL3.281

W = 0.004TL3.251

W(g)

784.0

124.6

726.4

126.10

r

0.926

0.911

0.933

0.921

r2

0.973

0.965

0.989

0.980