The research was conducted on May-July 2017. The purpose of this research was to know the best persentage using Feather meal fermented in fish feed and the effect on feed effeciency and growth of silver pompano (Trachinotus blochii, Lac) fingerling. This study uses a completely randomized design (RAL) with one factor, the level 5 treatment and 3 replications. Treatments with feather meal fermen…