6.2.1 Ichthyofauna diversity

6.2.1 Ichthyofauna diversity

The faunistic composition of these lakes generally reflects the diversity of the parent river as well as the state of entrophication of that particular lake. In open-lakes, the catch is dominated by the riverine fauna during flood season. The principle indigenious fishes inhabiting these lakes are 58 spp. belonging to 34 genera from these lake indicates that the resources supports rich and varied indigenous stocks of carps, catfishes, feather backs, snake heads, herring, gobies, perches, needle fish, mud eel, spiny eel, loaches etc. Because of the ecological changes of these lakes from oligotrophic to eutrophic, the fish spp. goes on changing. The members of Notopteridae, Siluridae, Bagridae, Sisoridae and Schilbeidae are encountered mostly in the open type lake. The ecosystem is an important source of food, forage, larvicidal and therapeutically important fishes. Presence of various species may be attributed to nature of basin, type of lake, impact of embankment, intensity of eutrophication and introduction to exotic.

Table: 12.6. Estimated fish yield of some oxbow lakes of Ganga, Brahmaputra and Barak basins

Basin

State

District

River basin

Name of lake

Area (ha)

Estimated fish yield (kg/ha/ year)

Ganga

Uttar Pradesh

Ballia

Ghaghra

Surhatal

2,000.00

240.00



Mau

Ghaghra

Ratoital

800.00

142.0



Azamgarh

Tons

Salontal

200.00

245.00



Basti

Ghaghra

Chandutal

230.00

150.0



Allahabad

Yamuna

Alwar Jheel

250.00

150.0


Bihar

Muzaffarpur

Burhi Gandak

Sikenderpur

45.5

230.00



Muzaffarpur

Burhi Gandak

Manika

105.8

190.00



Samastipur

Burhi Gandak

Muktapur

60.00

120.00



Champaran

Burhi Gandak

Motijheel

100.0

147.00



Samastipur

Burhi Gandak

Muktapur

60.0

240.00


West Bengal

Hooghly

Hooghly

Kol

81.6

150.0



Nadia

Bhagirathi

Boror

9.2

204.0



Murshidabad

Bhagirathi

Bhandardaha

437.0

150.0



Cooch Behar

Dharub

Khoardo

50.0

204.0



Barddhaman

Bhagirathi

Bansdaha

26.00

1,100.0



24 Pargana

Lchhmati

Garapota

122.00

330.0



Malda

Ghurnamani

Pagla

40.00

137.0

Brahmaputra

Assam

Kamrup

Brahmaputra

Dora

160.0

116.00



Sonitpur

Brahmaputra

Dighali

40.0

36.00



Barpeta

Brahmaputra

Kapla

75.0

126.0



Dibrugarh

Brahmaputra

Mer

30.0

71.0



Naogaon

Brahmaputra

Samaguri

60.00

96.00

Barak

Assam

Cachar

Barak

Ramnagar

15

215.00



Karimganji

Longai

Sone

3,458

97.00

(Source: ICAR Handbook on Fisheries and Aquaculture, 2006)

Last modified: Wednesday, 27 June 2012, 10:27 AM