• Prakash Kumar

This study aims to investigate fish assemblage structure and environmental variables across the five sites from January 2019, April 2019, June 2019 and October 2019 in Deumai river, Province No.1, Nepal. In total, 5757 specimens were caught, representing 16 species and Barilius barila (15.68%), B. bendelisis (12.44%), Schistura multifaciatus (10.35%), S. scaturigina (10.07%), Nazirator chelynoids (8.94%), Schistura rupecula (8.9%), Channa punctatus (6.56%), Glyptothorax pectinopterus (5.66%), and Schizothorax plagiostomus (5.08%) are the major contributory species for Deumai river. The ANOSIM analysis indicated that the fish assemblage structure had significant differences among the sample sites (p<0.05) but not with temporal variation (p>0.05). Redundancy Analysis (RDA) suggested that environmental variables of dissolved oxygen, free-carbon dioxide, ammonia, and pH were found to be important variables in shaping the fish assemblage structure of Deumai River. The distance correlation cluster method obviously portrayed that the similarity of fish species lessen when their distance of sites increased.

fish diversity, environmental variables, RDA, cluster, freshwater, Nepal

"FISH DIVERSITY OF DEUMAI KHOLA, ILAM DISTRICT, NEPAL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 3, page no.684-690, March-2020, Available :http://www.jetir.org/papers/JETIR2003406.pdf

"FISH DIVERSITY OF DEUMAI KHOLA, ILAM DISTRICT, NEPAL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 3, page no. pp684-690, March-2020, Available at : http://www.jetir.org/papers/JETIR2003406.pdf