Comparative study of length-weight relationships and biological indices of Himalayan snow trout, Schizothorax labiatus, inhabiting two lotic water bodies in the Kashmir Valley

  • Jan Kousar
  • Ahmed Imtiaz
Keywords: Allometric, growth, Gonadosomatic, index, Hepatosomatic, Jhelum, Regression, coefficient, Sindh


Abstract. The length-weight relationship (LWR) plays an
important role in fishery management as it can be used to
estimate the average weight of a specific length group. The
results of the current study revealed that the mean values of
regression coefficient b for both sexes of Schizothorax
labiatus (McClelland) in the Jhelum River indicated positive
allometric growth, while in the Sindh River, the b value for
males indicated positive allometric growth and for females
negative allometric growth. The value of coefficient of
determination r2 for both sexes of S. labiatus was equal to or
greater than 0.90 in both water bodies, except for females in
the Sindh River. Higher significant (P < 0.05) average values
of Fulton’s condition factor (K) and the hepatosomatic index
(HSI) for both sexes of S. labiatus were noted in the Jhelum
River than in the Sindh River. In contrast, higher significant (P
< 0.05) values of the gonadosomatic index (GSI) were
recorded in the Sindh River. The data generated during the
current study provide basic information for researchers and
fish biologists for the conservation and sustainable
management of this commercially important food fish species
in the Kashmir Valley