Abstract: A study on morphometric characters of snow trout fish Schizothorax richardsonii (Gray) was conducted on the samples collected from Yamuna river of the Uttarakashi district of Uttarakhand State. The morphometric measurements such as total length, standard length, predorsal distance, preventral distance, preanal distance, maximum body depth, minimum body depth, caudal peduncle length, head length, head width, pelvic and anal fin, pectoral, pelvic (ventral), were recorded. All the measurements were calculated in the percentage of total length except those of head width, head depth, interorbital, space, postorbital space and eye diameter, which were calculated in the percentage of head length. After investigation, it was observed that almost all the morphometric characters show high degree of coefficient of correlation (r>0.90) and correlation coefficient was significant at p<0.01 in all the variables except in the depth of anal fin, which was significant at p<0.05. Out of 21 characters studied, 19 characters were found to be genetic controlled 1 character intermediate and 1 character as environmentally controlled.