Ikan Manyung (Arius Sp) Mrupakan Salah Satu Ikan Dasar (Demersal) Yang Potensi Ekonomis Penting. Salah Satu Tindakan Yang Dapat Dilakukan Untuk Menjaga Kelestarian Habitat Ikan Manyung Ialah Dengan Eskploitasi Yang Rasional. Penelitian Mengenai Aspek Biologi Tersebut Dapat Memberikan Tambahan Informasi Mengenai Food And Feeding Habbit Ikan Manyung Serta Pemahaman Lebih Baik Pada Kelangsungan Hidup Dan Pertumbuhan Dari Ikan. Penelitian Ini Bertujuan Untuk Mengkaji Isi Lambung Dan Jenis Makanan Yang Di Makan Ikan Manyung Yang Ditangkap Dari Perairan Pantai Amal, Sampel Ikan Manyung Yang Didapat Oleh Peneliti Di Daerah Pantai Amal Baru Kota Tarakan. Sampel Ikan Manyung Diambil Pada Bulan April-Juni 2016, Dengan Total Sampel 120 Ekor Ikan. Pengambilan Data Dilakukan Dilapangan Dan Di Laboratorium Dengan Mengukur Berat, Panjang Total, Frekuensi Organisme Makanan Ikan Manyung, Makanan Utama Ikan Manyung (Arius Sp) Berdasarkan Indeks Frekuensi Kejadian Dan Volumetrik Adalah Sejenis Udang Dengan Nilai Sebanyak 47 %, Ikan Dengan Jumlah 36 %. Berdasarkan Komposisi Isi Lambung , Tipe Mulut, (Subterminal), Keberadaan Sungut, Serta Panjang Ususnya (2 Kali Panjang Tubuh) Maka Dapat Disimpulkan Ikan Manyung (Arius Sp) Bersifat Omnivora Yang Cenderung Karnivora. Hasil Penelitian Dari 120 Sampel Ikan Manyung (Arius Sp) Didapat Kisaran Panjang Yang Paling Banyak Terdapat Diinterval 8,0-9,9 Cm, Untuk Kisaran Berat Paling Banyak Terdapat Pada Interval 9,9-8,0 Kg.
Kata Kunci: Ikan Manyung (Arius Sp), Kebiasaan Makan, Tarakan

Manyung Fish (Arius Sp) Is One Of The Bottom Fish (Demersal), Which Has Significant Economic Potential. One Of The Measures That Can Be Done To Preserve The Habitat Of Fish Manyung Is A Rational Exploitation. Information Of The Biological Aspects Can Be Provide Additional Information On The Food And Feding Habbit And The Condition Of Manyung Fish, To Gain A Better Understanding On The Survival And Growth Of Fish. The Study Was Conducted To Examine The Contents Of The Stomach And The Type Of Food Eaten Of Manyung Fish Were Caught From The Waters Around Tarakan, Manyung Fish Samples Obtained From Fisheris Of Pantai Amal Of Tarakan. Manyung Fish Samples Taken On April-Juni 2016, With Total Sample Of 120 Fish. Retrieval Of Data In This Study Conducted In The Field And The Laboratory By Measuring The Weight, Total Length Of Fish, Fish Food Organism Manyung Frequency, And Calculate The Volume Food Organism Of Fish Manyung. Manyung Major Food Fish (Arius Sp) By His Frequency And Volumetric Is Kind Of Fish With A Value Of 1th Week 58.93, 2nd Week 58.93, 3th Week 55.10 And 4th Week 28.68 %. Base Of Composition Of Stomach Content, Type Of Mouth (Sub Terminal), The Presence Of Tentacle, And The Length Of Intestines Can Be Concluded Manyung Fish (Arius Sp) Is Omnivores Which Tend To Be Carnivores. The Result Of 120 Samples Manyung Fish (Arius Sp) Gained The Most Range Artifacts In The Interval 9.9- 8,0. Weight Range For Most Numerous In The Interval 8.0 To 9,9 Kg. Keywords: Manyung Fish (Arius Sp), Food Habits, Tarakan