The present study comparing the Length-Weight relationships and condition factor of Hormone Non-Treated (HNT) and Hormone Treated (HT) tilapia (Oreochromis niloticus) for 99 days from the May 5 to August 12, 2014 in different cages of pond at Sylhet Agricultural University. There were two treatments with six replications each where HNT stocked in treatment I and HT stocked in treatment II with same stocking density. Length and weight were taken randomly collected 16 individuals from each of the cases at 15 days interval throughout the study period. The length-weight relationships of HT and HNT were found Log W=-2.140194+1.196176 Log L and Log W=-2.111263+1.179839 Log L, respectively where the exponential value (b) for HT and HNT were 1.20 and 1.18. The growth trends were found to be allometric type from the present investigations both in HT and HNT. The coefficient of determination (r2) value found 0.9411 and 0.9294 respectively in HT and HNT tilapia. The values of condition factor (K) found to vary from 2.101-2.267, and 1.870-2.263; for HNT and HT respectively, and the mean values of the condition factor recorded for HNT and HT were 2.165 and 2.116, respectively. The present study concluded that performance of HT and HNT tilapia is almost same within three months of research.