Pakan Alami Dalam Usaha Budidaya Pembenihan Ikan Merupakan Faktor Yang Sangat Penting, Maka Perlu Adanya Pengetahuan Tentang Jenis Dan Pakan Alami Yang Baik Sehingga Dapat Mencukupi Kebutuhan Pakan Bagi Pembenihan Ikan Dan Non-Ikan. Penelitian Ini Dilakukan Untuk Mengetahui Pengaruh Pakan Alami Terhadap Pertumbuhan Dan Kelangsungan Hidup Larva Ikan Patin Dan Jenis Pakan Alami Yang Optimal Untuk Pertumbuhan Larva Ikan Patin (Pangasius Hypoptalmus). Dan Dilaksanakan Selama Bulan Oktober 2013 – November 2013 Di Laboratorium Teknologi Budidaya Perairan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Borneo Tarakan, Kalimantan Utara. Metode Penelitian Ini Menggunakan Metode Rancangan Acak Lengkap Dengan 3 Perlakuan Dan 5 Kali Ulangan. Perlakuan Pakan Alami Berupa Larva Culex Sp, Larva Chironomus Sp, Dan Moina Sp Secara Ad-Libitum, Tiap Ulangan Diberi 15 Ekor Benih Ikan. Hasil Penelitian Dari Parameter Sintasan Dan Pertumbuhan Yang Dihitung Berupa Pertambahan Berat, Pertambahan Panjang, Dan Laju Sintasan Berturut-Turut Adalah Larva Culex Sp (0,44 G; 1,3 Cm; 100 %), Larva Chironomus Sp (0,25 G; 0,8 Cm; 56,60 %), Dan Moina Sp (0,14 G; 0,4 Cm; 46,66 %). Hasil Analisis Sidik Ragam Ditunjukkan Hasil Yang Berbeda Nyata (P>0,05) Pada Semua Parameter Yang Diamati. Data Kualitas Air Selama Penelitian Menunjukkan Suhu Berkisar Antara 25-28o C, Oksigen Terlarut (DO) Berkisar Antara 3,2-6,4 Ppm, PH Berkisar Antara 6-7, Dan Ammonia Berkisar Antara 0,5-2,0 Ppm.
Kata Kunci: Pangasius Hypoptalmus, Larva Culex Sp, Larva Chironomus Sp, Moina Sp, Pertumbuhan

Natural Woof In Order To Cultivation Of Fish Seedbed Is The Important Aspect, So Its Need More Information And Knowledge About Kinds And Natural Woof Which Good For Cultivation Which Can Fulfil All Necessary In Woof For Fish And Non-Fish. This Research Was For Knowing The Influence Natural Woof Toward Growth And Life Directness Of Larva’s Patin And What Kinds Of Natural Woof Which Optimal For Growth Of Patin’s Larvae (Pangasius Hypoptaimus). This Research Have Been Doing During October 2013 Until November 2013 In Laboratory Of Marine And Cultivation Technology At Department Of Fishery And Marine At Borneo University In North Borneo. The Method Of This Research Used Completely Randomized Design With Three Times Treatment And Five Times Repeat. The Treatments Of Natural Woof Are Larva Culex Sp, Larva Chironomous Sp, And Moina Sp By Ad-Libitum, Each Treatments Give Fifteen Seed Of Fish. The Result Of This Research Is Count Survival Rate And Growth Of The Fish, Growth That Counts Are Increase Of Weight And Long. Survival Rate For Each Treatments Are Larvae Culex Sp (0.44 G; 1,3 Cm; 100 %) Larvae Chironomus Sp (0,25 G; 0,8 Cm; 56,60 %), And Moina Sp (0,14 G; 0,4 Cm; 46,66 %). The Result Analysis Of Variance Showed Significant Result (P>0,05) For All Parameter That Researcher Observe. The Data Of Water Quality During Observe Showed In A Range From 25 O To 28o C, Dissolved Oxygen Range From 3,2-6,4 Ppm, Potential Of Hydrogen(PH) Range From 6 To 7 And Ammonia Range From 0,5 To 2,0 Ppm. Keywords: Pangasius Hypoptalmus, Larvae Culex Sp, Larvae Chironomus Sp, Moina Sp, Growth