Most times, some fish farmers ask if I can recommend any drug that can make their catfish grow faster within a short period of time.
Well, I will not like to recommend the use of drug in aiding fish growth but will rather prefer giving you tips on some good management practices that can enable your fish grow faster especially with regards to feeding the fish with high quality feed of enough quantity.
Do regular sorting to reduce competition that may affect the growth of some fishes. These will help you have big and healthy fish rather than using drugs to make them grow faster.
However, all these are still subject to the quality of the fish in question because some fish farmers tends to make the mistake of buying fishes that are not of good breed that may not grow well probably due to the price at purchase or other cheaper means.
In this case, there is nothing that can make them change their genetic make up and allow them grow big over night which is why I will advice that you dispose them off because If you choose to keep feeding those fishes that you already know will not grow big, you may be running at a loss for the amount you will later sell them can never compensate for the amount in raising them.