title: Amblyceps waikhomi, a New Species of Catfish (Siluriformes: Amblycipitidae) from the Brahmaputra Drainage of Arunachal Pradesh, India.
abstract: Amblyceps waikhomi sp. nov. is described from the Nongkon stream which drains into the Noa Dehing River, a tributary of the Brahmaputra River, in Arunachal Pradesh, India. The new species can be distinguished from congeners (except A. torrentis) in having a deeper body depth at anus. It further differs from congeners (except A. mangois and A. serratum) in having fewer vertebrae, from A. mangois in lacking (vs. having) strongly-developed projections on the proximal lepidotrichia of the median caudal-fin rays, and in having a longer, wider, and deeper head; and from A. serratum in having a posteriorly smooth (vs. with 4-5 serrations) pectoral spine, and unequal jaw length (lower jaw longer and weakly-projecting anteriorly vs. equal upper and lower jaws). It additionally differs from A. murraystuarti, A. torrentis, A. apangi, A. laticeps, and A. cerinum in having a deeply forked (vs. emarginate or truncate) caudal fin. This species is the seventh amblycipitid species known to occur in the Ganga-Brahmaputra River system.
authors: Center with Potential for Excellence in Biodiversity, Rajiv Gandhi University, Rono Hills, Doimukh, India.
authors: Achom
authors: A
authors: Darshan
authors: Fishery and Aquatic Ecology Laboratory, Department of Zoology, Rajiv Gandhi University, Rono Hills, Doimukh, India.
authors: Akash
authors: A
authors: Kachari
authors: Center with Potential for Excellence in Biodiversity, Rajiv Gandhi University, Rono Hills, Doimukh, India.|Fishery and Aquatic Ecology Laboratory, Department of Zoology, Rajiv Gandhi University, Rono Hills, Doimukh, India.
authors: Rashmi
authors: R
authors: Dutta
authors: Fishery and Aquatic Ecology Laboratory, Department of Zoology, Rajiv Gandhi University, Rono Hills, Doimukh, India.|Department of Zoology, Achhruram Memorial College, Jhalda, Purulia, India.
authors: Arijit
authors: A
authors: Ganguly
authors: Center with Potential for Excellence in Biodiversity, Rajiv Gandhi University, Rono Hills, Doimukh, India.|Fishery and Aquatic Ecology Laboratory, Department of Zoology, Rajiv Gandhi University, Rono Hills, Doimukh, India.
authors: Debangshu Narayan
authors: DN
authors: Das
mesh_terms: D000818:Animals; D002397:Catfishes / Q000033:anatomy & histology / Q000145:classification*; D017753:Ecosystem; D007194:India; D045483:Rivers