Table 2 Fish community structure in the Dongjiang and Beijiang rivers within the Pearl River basin, China

Cypriniformes

Cyprinidae

Squalidus argentatus

Chub

19.28

8.04

I

N;RL

Ca

Hemiculter leucisculus

Common sawbelly

15.05

17.63

O

N;SE

Cu

Cirrhinus molitorella

Mud carp

4.06

12.31

H

N;RL

Ma

Culter recurviceps

Hainan culter

3.70

0.85

P

N;SE

Pseudohemiculter dispar

3.59

0.37

O

N;SE

Cu

Zacco platypus

Pale chub

3.45

0.09

O

N;SE

Ca

Squalidus wolterstorffi

Dot chub

3.22

0.08

I

N;RL

Ca

Squaliobarbus curriculus

Barbel chub

2.91

1.52

O

N;RL

Cu

Abbottina rivularis

Amur false gudgeon

2.62

0.02

O

N;SE

Cu

Cyprinus carpio

Carp

1.92

1.51

O

N;SE

Ma

Carassius auratus

Goldfish

1.82

2.55

O

N;SE

Ma

Megalobrama terminalis

Black amur bream

1.69

5.47

O

N;RL

Cu, Ma

Saurogobio dabryi

Longnose gudgeon

1.94

4.79

I

N;RL

Ca

Cirrhinus mrigala

Mrigal carp

1.29

1.07

O

Non;SE

Ma

Hemibarbus labeo

1.29

0.71

O

N;SE

Ca

Hemibarbus maculatus

1.20

1.14

O

N;SE

Ca

Hypophthalmichthys molitrix

Silver carp

1.14

1.50

PL

N;RL

Cu

Opsariichthys bidens

Chinese hooksnout carp

1.07

0.93

I

N;SE

Ca

Culter dabryi

Dashi culter

1.05

P

N;SE

Sarcocheilichthys parvus

0.91

O

N;SE

Ctenopharyngodon idellus

Grass carp

0.80

0.81

H

N;RL

Ma

Aristichthys nobilis

Bighead carp

0.75

0.38

PL

N;RL

Cu

Platysmacheilus exiguus

0.71

I

N;RL

Rhodeus sinensis

Light's bitterling

0.58

O

N;SE

Sinibrama wui

Bigeye bream

0.40

0.09

O

E;RL

Cu

Xenocypris davidi

Yellow tailed xenocypris

0.35

2.28

H

N;RL

Ma

Onychostoma gerlachi

Largescale shoveljaw fish

0.29

H

N;SE

Hemiculterella wui

0.28

O

E;SE

Puntius semifasciolatus

Chinese barb

0.26

O

N;SE

Acrossocheilus beijiangensis

0.13

H

N;SE

Osteochilus salsburyi

0.11

1.01

O

N;SE

Ma

Parabramis pekinensis

White bream

0.10

0.06

H

N;RL

Cu

Xenocypris argentea

Silver xenocypris

0.10

0.04

Ma

Culter alburnus

Topmouth culter

0.08

0.57

P

N;SE

Culter hypselonotus

Bigeye culterfish

0.07

 + 

p

N;SE

Megalobrama amblycephala

Wuchang fish

0.05

0.02

O

N;RL

Distoechodon tumirostris

Round mouth

0.05

0.02

H

N;RL

Ma

Acheilognathus tonkinensis

Vietnamese bitterling

0.03

0.66

O

N;SE

Cu

Sinibrama melroseib

Hainan bream

0.02

0.06

O

N;SE

Cu

Mylopharyngodon piceus

Black carp

0.02

0.01

I

N;RL

Acrossocheilus parallens

0.02

H

N;SE

Acrossocheilus labiatus

0.02

H

N;SE

Acrossocheilus stenotaeniatus

0.02

H

N;SE

Elopichthys bambusa

Yellow cheek carp

0.02

P

N;RL

Acheilognathus macropterus

Largefin bitterling

0.02

O

N;SE

Rectoris posehensis

0.01

H

N;SE

Cyprinus carpio var.specularis

German mirror carp

0.01

O

N;SE

Labeo rohita

Roho labeo

0.10

D

Non;SE

Huigobio chenhsienensis

Huigobio gudgeon

 + 

I

N;RL

Pseudogobio vaillanti

0.08

I

N;RL

Acheilognathus chankaensis

Khanka spiny bitterling

0.26

O

N;SE

Sarcocheilichthys nigripinnis

0.15

O

N;SE

Garra orientalis

Oriental sucking barb

0.04

H

N;SE

Pseudolaubuca sinensis

0.03

PL

N;SE

Pseudorasbora parva

Stone moroko

0.02

O

N;SE

Tinca tinca

Tench

0.02

O

Non;SE

Spinibarbus denticulatus

0.02

O

N;RL

Gobiobotia meridionalis

0.02

I

E;SE

Rhodeus spinalis Oshima

0.01

O

N;SE

Parasinilabeo assimilis

0.01

H

N;SE

Cobitidae

Misgurnus anguillicaudatus

Oriental weatherfish

4.06

3.53

D

N;SE

Ca

Micronoemacheilus pulcher

0.21

0.08

D

N;SE

Ca

Cobitis sinensis

Siberian spiny loach

0.01

0.38

I

N;SE

Ca

Homalopteridae

Vanmanenia hainanensis

0.01

I

E;SE

Perciformes

Cichlidae

Oreochromis niloticus

Nile tilapia

4.52

13.07

O

Non;SE

Tilapia zillii

Zillii tilapia

0.32

0.17

O

Non;SE

Serranidae

Lateolabrax japonicus

Spotted sea bass

1.20

I

N;RS

Siniperca kneri

Bigeye mandarinfish

0.34

0.05

P

N;SE

Siniperca scherzeri

Spotted mandarinfish

0.16

P

N;SE

Channidae

Channa asiatica

Chinese snakehead

0.02

0.27

P

N;SE

Channa maculata

Taiwan snakehead

0.01

0.18

P

N;SE

Channa argus

Snakehead

0.01

P

N;SE

Eleotridae

Eleotris oxycephala

Sharphead sleeper

0.49

0.20

I

N;SE

Ca

Hypseleotris hainanensis

0.01

I

N;SE

Gobiidae

Rhinogobius giurinus

Amur goby

0.17

1.74

I

N;SE

Ca

Glossogobius giuris

Tongue goby

2.67

I

N;SE

Ca

Anabantidae

Anabas testudineus

Climbing perch

0.01

O

Non;SE

Mastacembelidae

Mastacembelus armatus

Tire track eel

0.41

0.55

I

N;SE

Siluriformes

Bagridae

Pelteobagrus fulvidraco

Yellow catfish

1.43

0.70

I

N;SE

Pelteobagrus vachelli

Darkbarbel catfish

1.27

1.48

I

N;SE

Leiocassis crassilabris

Ussuri catfish

1.07

0.02

I

N;SE

Mystus guttatus

Spotted longbarbel catfish

0.54

0.38

I

N;SE

Leiocassis argentivittatus

0.25

0.34

I

N;SE

Mystus macropterus

Largefin longbarbel catfish

0.01

I

N;SE

Leiocassis virgatus

Striped catfish

0.37

I

N;SE

Sisoridae

Glyptothorax fukiensis

0.09

I

N;SE

Ictaluridae

Ictalurus punctatus

Channel catfish

0.08

I

Non;SE

Clariidae

Clarias fuscus

Oriental catfish

0.08

0.65

O

N;SE

Clarias gariepinus

Fuscous catfish

0.01

0.18

O

Non;SE

Siluridae

Silurus asotus

Catfish

0.36

0.18

P

N;SE

Loricariidae

Hypostomus plecostomus

Suckermouth catfish

0.05

0.05

O

Non;SE

Clupeiformes

Clupeidae

Clupanodon thrissa

Chinese gizzard shad

0.19

PL

N;RS

Konosirus punctatus

Dotted gizzard shad

0.05

PL

N;RS

Engraulidae

Coilia grayii

Gray's grenadier anchovy

2.60

3.20

I

N;SE

Cu

Anguilliformes

Anguillidae

Anguilla japonica

Japanese eel

0.03

P

N;RS

Synbranchiformes

Synbranchidae

Monopterus albus

Finless eel

0.08

0.06

I

N;RS

Characiformes

Anostomidae

Prochilodus scyofa

0.17

0.01

O

Non;SE

Tetraodontiformes

Tetraodontidae

Takifugu ocellatus

Ocellated puffer

 + 

I

N;RS