Table 1 (continued)
Sl.
No.
Commercially important fin fish
Western sector
(Hooghly estuary)
Central sector
(Matla estuary)
13
Sciaena biauritus (Family:
Sciaenidae)
1.099
0.992
14
Eleutheronema tetradactylum
(Family: Polynemidae)
0.994
0.788
Note The value 0 (zero) represents the nonavailability of the species in the estuarine water
Fig. 1 Decreasing trend of surface water salinity in western sector of the study area over a period
of 31 years
Fig. 2 Increasing trend of surface water salinity in central sector of the study area over a period of
31 years
352
A. Mitra et al.