99
Fish
Some of the fi shes generally found in the lentic
bodies of ArP are Anabas testudineus , Clarias
batrachus , Heteropneustes fossilis , the IMCs,
etc. However, human interference has, of late,
impaired the production potential of the wetlands. Overgrowth of AM and ineffective managerial practices have further been adding to the
degrading situation. Consequently, small fi sh and
minnows generally dominate the lakes with multiple breeding annually, relegating the production
of prize food fi shes going down. Today, the average fi sh yield from lentic bodies of the province
is 50–100 kg ha
−1
, although the lentic bodies have
a production potential of 1,000–2,000 kg ha
−1 , if
managed scientifi cally. Some of these measures
may include (a) upgradation of fi shing gears, (b)
effective management of AM, (c) proper stocking
with suitable fi sh species (grass carp and freshwater prawn, etc.), (d) proper utilisation of existing food chain and the available benthic organism
and (e) introduction of pen-culture/cage culture.
The fish and fisheries of the wetlands of
ArP have been exemplifi ed through a typical
wetland.
Fish and Fisheries of Bor Beel
The Bor Beel (area 308 ha) in Lohit District was
initially a productive lake having depth ranging
from 2.4 to 4.0 m and fi sh landing to the tune of
3.0 mt. c 71 species of fi shes have been recorded
from this lentic body as against 131 fi sh species
reported from this province. This wetland is
leased out every year. It is an open lentic body
with both inlet and outlet connected with the
main river Noadhing, thus ensuring autostocking. However, the minnows and trash fi shes
sometimes replace the LGF through higher production, a trend, which must be reversed. This
could be done through suspension of leasing of
the lentic body for few years. Also, the inlets
and the outlets be guarded with the effort of
stocking with fi ngerlings of commercial variety
every year, so that desired production level
could be achieved.
An account of district-wise distribution of
wetlands in ArP is given below.
In East Kameng
East Kameng has c 5,443 ha of wetland area.
There are about 27 HA lakes covering an area of
215 ha. One reservoir is located near Lamzang.
In Papum Pare
Papum Pare has c 2,718 ha of wetland area.
In Lower Subansiri
Lower Subansiri has c 3,607 ha of wetland area,
of which the HA lakes form signifi cant components. Open water generally has low turbidity.
In Upper Subansiri
Upper Subansiri has c 3,365 ha of wetland
area, out of which the HA lakes form signifi -
cant components.
In West Siang
West Siang has c 6,147 ha of wetland area, out of
which the HA lakes form signifi cant components.
In East Siang
East Siang has c 25,512 ha of wetland area. The
major wetland types are waterlogged areas,
oxbow lakes, etc. The turbidity of the open water
is usually low.
In Upper Siang
Upper Siang has c 6,686 ha of wetland area, out of
which the HA lakes form signifi cant components.
The turbidity of the open water is usually low.
In Dibang Valley
The Dibang Valley is a district of Arunachal
Pradesh named after the Dibang River or the
Talon as the Idu tribe calls it. The river originates
in the mountains of China and fl ows through the
length of the valley named after it. Dibang Valley
has c 6,686 ha of wetland area, which includes
443 HA lakes. The turbidity of the open water is
generally low.
In Lohit
Lohit District is named after the river ‘Lohit’. The
wetland area estimated is 45,719 ha consisting of
HA lakes, waterlogged and ox-bow lakes, etc.
6.9 High Altitude (HA) Lentic Bodies
Fish
Some of the fi shes generally found in the lentic
bodies of ArP are Anabas testudineus , Clarias
batrachus , Heteropneustes fossilis , the IMCs,
etc. However, human interference has, of late,
impaired the production potential of the wetlands. Overgrowth of AM and ineffective managerial practices have further been adding to the
degrading situation. Consequently, small fi sh and
minnows generally dominate the lakes with multiple breeding annually, relegating the production
of prize food fi shes going down. Today, the average fi sh yield from lentic bodies of the province
is 50–100 kg ha
−1
, although the lentic bodies have
a production potential of 1,000–2,000 kg ha
−1 , if
managed scientifi cally. Some of these measures
may include (a) upgradation of fi shing gears, (b)
effective management of AM, (c) proper stocking
with suitable fi sh species (grass carp and freshwater prawn, etc.), (d) proper utilisation of existing food chain and the available benthic organism
and (e) introduction of pen-culture/cage culture.
The fish and fisheries of the wetlands of
ArP have been exemplifi ed through a typical
wetland.
Fish and Fisheries of Bor Beel
The Bor Beel (area 308 ha) in Lohit District was
initially a productive lake having depth ranging
from 2.4 to 4.0 m and fi sh landing to the tune of
3.0 mt. c 71 species of fi shes have been recorded
from this lentic body as against 131 fi sh species
reported from this province. This wetland is
leased out every year. It is an open lentic body
with both inlet and outlet connected with the
main river Noadhing, thus ensuring autostocking. However, the minnows and trash fi shes
sometimes replace the LGF through higher production, a trend, which must be reversed. This
could be done through suspension of leasing of
the lentic body for few years. Also, the inlets
and the outlets be guarded with the effort of
stocking with fi ngerlings of commercial variety
every year, so that desired production level
could be achieved.
An account of district-wise distribution of
wetlands in ArP is given below.
In East Kameng
East Kameng has c 5,443 ha of wetland area.
There are about 27 HA lakes covering an area of
215 ha. One reservoir is located near Lamzang.
In Papum Pare
Papum Pare has c 2,718 ha of wetland area.
In Lower Subansiri
Lower Subansiri has c 3,607 ha of wetland area,
of which the HA lakes form signifi cant components. Open water generally has low turbidity.
In Upper Subansiri
Upper Subansiri has c 3,365 ha of wetland
area, out of which the HA lakes form signifi -
cant components.
In West Siang
West Siang has c 6,147 ha of wetland area, out of
which the HA lakes form signifi cant components.
In East Siang
East Siang has c 25,512 ha of wetland area. The
major wetland types are waterlogged areas,
oxbow lakes, etc. The turbidity of the open water
is usually low.
In Upper Siang
Upper Siang has c 6,686 ha of wetland area, out of
which the HA lakes form signifi cant components.
The turbidity of the open water is usually low.
In Dibang Valley
The Dibang Valley is a district of Arunachal
Pradesh named after the Dibang River or the
Talon as the Idu tribe calls it. The river originates
in the mountains of China and fl ows through the
length of the valley named after it. Dibang Valley
has c 6,686 ha of wetland area, which includes
443 HA lakes. The turbidity of the open water is
generally low.
In Lohit
Lohit District is named after the river ‘Lohit’. The
wetland area estimated is 45,719 ha consisting of
HA lakes, waterlogged and ox-bow lakes, etc.
6.9 High Altitude (HA) Lentic Bodies