The fish was found in the river at a depth of 1999 metres at Mechuka, a release by the team said here today.
This is the second such discovery and the new species belong to the genus Creteuchiloglanis. The first one was found at Kalaktang in West Kameng district of the state in 1966, the release said.
The holotype and paratypes of the new species were deposited and preserved in Rajiv Gandhi University Museum of Fishes and Zoological Survey of India, Itanagar.