Material and methods
Measurements were made on the left side of specimens with dial calipers to the nearest 0.1 mm, following Ng and
Dodson (1999). The thoracic adhesive apparatus was measured following Vishwanath and Linthoingambi (2007).
Measurements of head length (HL) and body parts are expressed as proportions of standard length (SL) and thesubunits of the head as proportions of head length. Fin rays were counted under a Nikon SMZ800 stereo-zoom
microscope. Gill raker and vertebral counts, and institutional abbreviations follow Rameshori and Vishwanath
(2012a). Numbers in parentheses after a count indicate the frequency of that count. The type specimens are
deposited at the Rajiv Gandhi University Museum of Fishes (RGUMF), Doimukh, Arunachal Pradesh.