Ichthyofaunal Diversity of Downstream Dikhu River and its Tributaries in Mon District of Nagaland, India

This study has been undertaken to investigate the Ichthyofaunal diversity, their present IUCN conservation status and economic value within the downstream Dikhu river and its tributaries in Mon district of Nagaland between 2019 to 2020. During the survey a total number of 22 fish species belonging to 4 orders, 8 families, 6 sub-families 17 genera were recorded. The catch lists composition showed the predominance of cyprinidae with 50%, Balitoridae 14%, Bagridae and Sisoridae 9%,Amblycipitidae and Channidae 5% whereas Psilorhynchynchidae and Belonidae represented by 4% each.The most significant of the investigation was the finding of endangered (EN) species Tor putitora, near threatened (NT) Nimacheilus manipurenis and four species Nemacheilus sikmaeinsis, Barilius barana, Garra lissorhynchus and Bagarius yarrelli as a vulnerable (VU) species of IUCN Red list.