This study aims to know the effect of stocking density of eel (Monopterus albus) reared in mud media on growth and survival. The research was carried out in March 3, 2020 - April 12, 2020 at the Fish Hatchery Unit, Faculty of Fisheries and Marine, Riau University. The test animals in this study were eels (Monopterus albus) with a size of 14 cm - 16 cm, as many as 252 animals were spread int…