Length-Weight Relationship and Relative Condition Factor of Ichthyofaunal Species in Yashwant Sagar Dam, Indore City (M.P.), India

Abstract

The aim of current investigation was to understand the Length - Weight relationship of some local fish in Yashwant Sagar dam during January to March, 2024 to know the fisheries status of the dam. The highest average length and weight were noticed as 57 cm and 4000 g during March for Catla catla however, the lowest average length and weight were recorded to be 16.50 cm and 115 g for Notopterus notopterus and Clarias batrachus respectively during January month. The Fulton’s condition factor (K) were ranges from 1.081 to 2.99 which indicating the about the good health condition of ichthyofaunal species moreover, the Relative Condition Factor (Kn) fluctuated in the ranges of 0.9057 to 1.1733, illustrates about a state of well-being of the fish species in Yashwant Sagar dam. Further, the exponent ‘b’ values in the LWRs (W=aLb) were varied from 1.48167 to 2.08767 which demonstrates the negative allometric growth (b<3). The coefficient of correlation (r) were found to be in the range of 0.818 to 0.910 which illustrates high degree of correlation in all the fish fauna. This study has great importance as it helps to manage the stock assessment as well as population dynamics of the fishes which are necessary for better productivity of ichthyofaunal species in Yashwant Sagar dam. It explores the length weight relationship of fish species which have great importance to get the knowledge about growth, species composition and population dynamics of ichthyofaunal species in water bodies, which are necessary for sustainable utilization of its resources.