Penelitian ini bertujuan untuk mengetahui pengaruh pemberian dan penggunaan pakan nabati Lemna sp. dan Azolla sp. terhadap pertumbuhan benih ikan nila. Penelitian dilaksanakan di Laboratorium Jurusan Perikanan, Universitas Sulawesi Barat. Benih ikan nila yang digunakan dalam penelitian yaitu 3-5 cm, dengan bobot awal rata-rata 1,4 g. Frekuensi pemberian pakan yaitu 2 kali sehari sebanyak 20% dari bobot tubuh benih ikan nila. Lemna sp. dan Azolla sp. yang diberikan dicincang-cincang sehingga ukurannya lebih kecil sesuai dengan bukaan mulut benih ikan nila. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 3 kali ulangan. Analisis data dilakukan menggunakan SPSS Versi 22.00. Hasil penelitian menunjukkan bahwa pemberian pakan nabati Lemna sp. dan Azolla sp. tidak berpengaruh nyata terhadap pertumbuhan berat mutlak, pertumbuhan panjang mutlak, laju pertumbuhan harian dan efisensi pemberian pakan, tetapi berpengaruh nyata terhadap kelangsungan hidup benih ikan ikan nila. Rata-rata pertumbuhan panjang mutlak, pertumbuhan bobot mutlak, laju pertumbuhan harian, kelangsungan hidup dan efisiensi pemanfaatan pakan benih ikan nila terbaik pada perlakuan C yaitu kombinasi antara Lemna sp. dan Azolla sp. dengan nilai berturut-turut 0,95 cm, 0,56 gram, 95,55%, 1,09 gram dan 42,04%.

This research aims to determine the effect of providing and using vegetable feed Lemna sp. and Azolla sp. on the growth of tilapia fry. The size of the tilapia seeds used in the research was 3-5 cm, with an average initial weight of 1.4 g. The frequency of feeding is given in the morning and evening. The frequency of feeding is 2 times a day as much as 20% of the body weight of tilapia seeds. The method of feeding is that first, Lemna sp. and Azolla sp. are chopped so that they become smaller in size according to the mouth opening of the tilapia fry. The method in this research used a Completely Randomized Design (CRD) with 3 treatments and each treatment used 3 replications were obtained and the research results were processed
using SPSS software version 22.00. The results showed that feeding Lemna sp. and Azolla sp. had no real effect on the average absolute weight growth, average absolute length growth, average daily growth rate and average feeding efficiency, but had a significant effect on the average survival rate of tilapia fish fry. Average absolute length growth, absolute weight growth, daily growth rate, survival and efficiency of utilization of the best tilapia seed feed in treatment C, namely a combination of Lemna sp. and Azolla sp. with values respectively 0.95 cm, 0.56 grams, 95.55%, 1.09 grams and 42.04%.