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Length–weight and length–length relationships of eight fish species from river Ganga, India
Author(s) -
Baitha R.,
Karna S. K.,
Ray A.,
Chanu T. N.,
Swain H. S.,
Ramteke M. H.,
Bayen S.,
Manna R. K.,
Das B. K.
Publication year - 2018
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.13698
Subject(s) - biology , fish <actinopterygii> , range (aeronautics) , veterinary medicine , fishery , zoology , medicine , materials science , composite material
Summary Present study provides length–weight relationships (LWRs) and length–length relationships (LLRs) of eight fish species from river Ganga, India. Specimens were sampled from gill nets (mesh, 22–120 mm), cast nets (mesh, 12–14 mm), and seine nets (mesh, 12 mm) on quarterly basis from September 2016 to September 2017 within the river stretch from Buxar (25°33′43.90″N and 83°56′3.10″E) to Freserganj (21°35′40.58″N and 88°15′28.92″E). The b value ranged from 2.86 ( Otolithoides pama ) to 3.08 ( Polynemus paradiseus ), whereas a value ranged from 0.004 ( P . paradiseus ) to 0.016 ( Rita rita ). Both relationships (LWRs and LLRs) were found to be highly correlated ( p < .001). This study provides first report on LWR for Amblyceps mangois and Osteobrama cotio , whereas new maximum length recorded for Macrognathus pancalus . Furthermore, the estimate of R . rita should be considered as tentative because of the limited size range in the study.