Abstract
Two new catfish species of the genus Pseudecheneis, viz., P. ukhrulensis sp. nov. and P. sirenica sp. nov. are described from northeastern India, from streams of Ukhrul district, Manipur (Chindwin basin) and Siren River, Upper Siang District, Arunachal Pradesh (Brahmaputra basin), respectively. The two species can be distinguished from their closest congener P. sulcata in having prominent bony spurs on the anterodorsal surface of the first dorsal-fin pterygiophore (vs. absent), from P. crassicauda in shallower caudal peduncle, from P. serracula in shorter adipose fin base and from P. stenura in deeper caudal peduncle. P. sirenica sp. nov. is distinguished from P. eddsi in its longer pelvic fin and anal fin and from P. ukhrulensis sp. nov. in having longer pectoral fin and caudal peduncle. A key to identification of Pseudocheneis of India and Nepal is given.