Length-Weight Relationships and Growth Patterns of Eight Indigenous Fish Species from Lancang River, Southwest China

Table 2

Descriptive statistics and estimated parameters of LWR (BW = a SL^b) for eight indigenous fish species sampled in the Lancang River, Southwest China, from 2018 to 2021.

Family

Species

Dates

n

SL

BW

a

95% Cl of a

b

95% Cl of b

r^2

Growth pattern

Range

Mean ± S.D.

Range

Mean ± S.D.

Cyprinidae

Schizothorax lissolabiatus Tsao, 1964

Spr.

34

3.5–26.0

14.1 ± 5.2

0.8–338.1

70.72 ± 32.3

0.0108

0.0080–0.0136

3.1732

3.0732–3.2733

0.9918

P

Aut.

116

4.3–25.4

10.2 ± 4.58

1.4–292.8

53.85 ± 30.0

0.0173

0.0151–0.0196

2.9617

2.9054–3.0181

0.9893

I

Poropuntius huangchuchieni (Tchang, 1962)

Spr.

65

7.5–18.0

10.21 ± 2.32

10.3–120.6

26.8 ± 21.41

0.0407

0.0263–0.0551

2.7329

2.5796–2.8862

0.9528

N

Aut.

30

4.5–27.0

10.62 ± 6.23

1.8–430.5

101.26 ± 59.67

0.0140

0.0113–0.0168

3.1570

3.0716–3.2425

0.9952

P

Tor sinensis Wu, 1977

Spr.

35

7.9–79.2

20.59 ± 7.91

9.5–9298.0

2221.05 ± 759.80

0.0203

0.0033–0.0372

3.0031

2.7109–3.2954

0.9720

I

Sum.

29

5.7–78.5

21.93 ± 8.38

4.4–8120.3

1692.88 ± 560.73

0.0314

0.0159–0.0469

2.8725

2.7074–3.0376

0.9858

I

Scaphiodonichthys acanthopterus (Fowler, 1934)

Spr.

24

3.4–43.3

12.98 ± 6.42

0.7–1713.9

143.28 ± 80.71

0.0306

0.0205–0.0406

2.8503

2.7183–2.9824

0.9891

N

Sum.

41

5.0–34.0

13.6 ± 7.07

2.9–719.7

263.68 ± 120.4

0.0149

0.0076–0.0223

3.1587

2.9647–3.3527

0.9653

I

Mystacoleucus lepturus Huang, 1979

Spr.

31

4.5–17.4

6.49 ± 1.05

1.8–65.7

6.14 ± 3.23

0.0276

0.0101–0.0450

2.8475

2.5078–3.1871

0.9102

I

Sum.

25

4.5–9.1

6.34 ± 0.91

2.7–17.2

4.81 ± 1.91

0.0424

0.0227–0.0621

2.5378

2.2855–2.7900

0.9493

N

Hemiculterella macrolepis Chen, 1989

Spr.

40

6.0–10.0

8.0 ± 1.07

2.1–9.0

5.1 ± 1.77

0.0171

0.0127–0.0215

2.7225

2.5987–2.8463

0.9815

N

Nemacheilidae

Schistura porthos Kottelat, 2000^+

Spr.

31

5.4–7.9

6.7 ± 0.62

2.5–8.1

4.8 ± 1.36

0.0138

0.0102–0.0175

3.0723

2.9336–3.2110

0.9861

I

Sisoridae

Glyptothorax lampris Fowler, 1934

Win.

33

4.5–10.0

6.0 ± 1.30

1.9–14.5

4.0 ± 2.68

0.0305

0.0235–0.0374

2.6632

2.5345–2.7920

0.9826

N

Newly recorded LWR to FishBase; ⁺tentative estimation due to limited size range; bold, new maximum record of standard length to FishBase; n, sample size; a and b, regression parameters; Cl, confidence limits; r², coefficient of determination; P, positive allometric growth; I, isometric growth; N, negative allometric growth; S.D., standard deviation (SL, cm; BW, g).