Mystus nigriceps is freshwater fish that inhabit the Tarai River. A research aims to understand the morphometrical, meristical characteristics and growth pattern of this fish had been conducted from January to March 2019. Sampling were conducted in the Tarai River, using cast net , scoop net and bamboo trap, six times, once/ two week. Result shown that there were 102 fishes (70.93-181.21 mm TL…