<div><strong>Background: </strong>The north-eastern region of India well known its innumerable natural resources. Flanked by two of the biodiversity hotspots of Indian subcontinent, North-East India has rich biological diversity of flora and fauna in its every corner. The present study has undertaken to assess the ichthyofaunal resources and physico-chemical parameters of Ranganadi river which will contribute to the scientific knowledge domain and aid in the planning of much needed conservation strategies.<br />
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<strong>Methods:</strong> The ichthyofauna and water quality parameters has been studied from February 2021 to January 2022 on a monthly basis in the three different terrains of Ranganadi river.<br />
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<strong>Result: </strong>The study revealed 76 fish species belonging to 9 different orders and 26 families. The major share contributed by the order cypriniformes (47.36%) followed by siluriformes (23.68%), Perciformes (13.15%), Synbranchiformes (5.26%), Anabantiformes (3.94%), Clupeiformes (2.63%), Tetradontiformes (1.31%), Anguilliformes (1.31%) and Beloniformes (1.31%) constitutes total ichthyofaunal composition of Ranganadi river recorded in the survey. During the survey, occurrence of fishes from Endangered (EN), Vulnerable (VU), Near Threatened (NT) category also documented in the river basin. The water quality parameters were found to be in the suitable ranges in contrast to parameters of healthy aquatic bodies.</div>


<p>Investigation on Ichthyofaunal Assortment and Water Quality Parameters in the Ranganadi River of North-East India</p>


<div>The sustainability of fish diversity and its abundance is based on the quality of water existing in that locality. All the hydrological parameters as well as plankton diversity influences the production of fish species. Stocking of economically viable native species of fishes in the reservoirs may convert the reservoirs more productive and is important measure from aquabiotic conservation point of view. The present investigation carried out at Tungabhadra reservoir from Jun 2017 to May 2018. Physico-chemical characters and fish diversity was estimated at topographically different sites. Results revealed optimum ranges of hydrological parameters showing alkaline pH, high Dissolved Oxygen and nutrient richness in all the three selected stations. There was positive relationship between hydrological parameters and the abundance of fin-fishes. Fish composition was dominated by Cyprinids. The rate of abundance was major carps &gt; minor carps &gt; cat fishes &gt; trash fishes.</div>


Investigation on Ichthyofaunal Assortment and Water Quality Parameters in the Ranganadi River of North-East India

Effect of Topographically Different Strata of Reservoir on Seasonal Composition of Ichthyo-Fauna in Tungabhadra Reservoir