ABSTRACT This research was conducted on March 30 to May 10, 2021 at the Laboratory of the Technical Service Unit (UPT) for Ponds and Hatcheries, Faculty of Fisheries and Marine Science, University of Riau. This research aims to determine the immersion dose of recombinant growth hormone (rGH) to stimulate growth and survival of redtail catfish (Hemibagrus nemurus) fry. Redtail catfish was soake…