Vol. 1, Issue 2 (2016)
Length-Weight relationship and relative condition factor of Nandus nandus (Hamilton, 1822) of Garjan Beel (wetland) of Assam, India
Author(s): Leema Kalita, Sadhana Nazir, Sasanka Sekhar Ghosh, Parag Deka
Abstract: The present study reports the length-weight relationship of male and female Nandus nandus (Hamilton, 1822) of Garjan Beel (wetland) of Assam. The fishes are separated into male and female for calculation of length weight relationship and relative condition factor. The growth performance of length-weight relationship are found high since the correlation coefficient ‘r’ exhibits high degree of relationship, although the growth being negative allometric in both male and female. The negative allometric growth observed may be due to lower feeding proficiencies and/or the environmental condition and/or physico-chemical parameters and/or the season of experiment are not suitable for proper growth of fishes. The ‘Kn’ value of male Nandus nandus ranges from 1.02 to 1.84 with an average 0f 1.36±0.20 and in female from 1.02 to 2.04 with an average of 1.32±0.23 showing better condition of the experimental fish. Such a high value of ‘Kn’ (greater than 1) is a special feature recorded in the present study for the species Nandus nandus. The relative condition factor is also observed to decrease from lighter to heavier fish first and increase slightly near to the heaviest fish.