ABSTRAK Penelitian ini dilakukan untuk mengetahui bagaimana konsentasi optimum vitamin E dalam pakan terhadap pertambahan bobot tubuh, laju pertumbuhan spesifik, kelangsungan hidup, rasio konversi pakan dan efesiensi pakan ikan kakap putih -1 pakan, 150 mg kg -1 pakan, 200 mg kg -1 pakan, 250 mg kg -1 pakan, 300 mg kg -1 pakan, 350 mg kg -1 pakan. Ikan yang digunakan adalah ikan kakap putih pakan. Kata kunci: kakap putih, Lates calcarifer, vitamin E, pertumbuhan, kelangsungan hidup, pemanfaatan pakan. -1 ABSTRACT The objective of the study was to determine the optimum concentration of vitamin E in the diet on weight gain, specific growth rate, sulvival rate, feed convertion rasio and feed efficiency of seabass Lates calcarifer. The study was conducted from November 2018 to January 2019 at Center for Brackishwater Aquaculture in Ujong Batee, Aceh Besar District, Indonesia. The completely randomized design feed; 200 mg kg -1 feed; 250 mg kg -1 feed; 300 mg kg -1 -1 feed; 150 mg kg feed; and 350 mg kg feed. The seabass body weight ranges from 2 g to 4 g and total length ranges from 5 cm to 7 cm with a stocking densities of 10 fish 10 liter -1 . The fish fed at feeding 10% of body weight, twice daily at morning and evening. The result showed that the feed with the addition of vitamin E had a significant effect on body weight gain, specific growth rate, feed convertion rasio, feed efficiency and sulvival rate -1 of feed. Keyword : Seabass, Lates calcarifer, vitamin E, performance growth, sulvival rate, feed utilization -1 -1