In this,study, the age-sex distribution; age-weight; age, lenght, weight correlations; the age of growing and the equation of logaritmic regression were calculated. Of the 486 individuals 53,3% were females and 46.7 % were males. The length at the ages of V. VI and VIII; the weight at the ages of IV and VIII were found to be significant. Growth equations were calculated as Log W= -4,32750+2,83 Log L, for females and for males Log W= -4,70924+2,36 Log L and for males+females, they were LogW= -4,43806+2,86 Log L. The condition factor in females was found to be 1.17 as the lowest (age IV) and 1,72 as the highest (age VIII) to 1.69 (age II) in males. The age of growing were found to be II-III. In males and females this age was found to be III-IV. The percentage of the individuals were found to be 60-90% in the age group of I-III. This indicates there is a young Capoeta trutta population in Tohma Stream. © TÜBlTAK.