EFFECT OF STAGE AND SEASONAL DIFFERENCES ON LENGTHWEIGHT RELATIONSHIP AND CONDITION FACTOR OF CHOCOLATE MAHSEER (NEOLISSOCHILUS HEXAGONOLEPIS)
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Authors
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SUMAN SANWAL
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DEBAJIT SARMA
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N. OKENDRO SINGH
Abstract
The present study attempts to develop a comprehensive length-weight relationship of chocolate mahseer Neolissochilus hexagonolepis considering its different stages of life and various seasons. Accordingly, the length-weight relationship of chocolate mahseer has been developed from culture system at Directorate of Coldwater Fisheries Research, Bhimtal. ANCOVA results suggested that the length-weight relationship of this fish species is not affected by different seasons and various stages of its lifecycle. Nonlinear model fitted to the dataset has shown appropriateness, which follows isometric growth. The condition of the fish is found to be progressively better in the advanced stages whereas the maximum average condition and relative condition factors are observed during spring season.
Key words: Morphometric character, isometric growth, nonlinear model, condition factor.
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